Publications

"778.1 nm distributed feedback lasers for Rb two-photon atomic systems with sub-4 kHz linewidths" APL Photonics 9, 056114 (2024) - DOI: 10.1063/5.0191088
E. Di Gaetano, B. Keliehor, K. Gallacher, P. F. Griffin, M. Sorel, E. Riis, and D. J. Paul

"MEMS Gravimeters for Geophysics" IEEE Instrumentation & Measurement Magazine 27(6), 46 (2024) - DOI: 10.1109/MIM.2024.10654725
A. Prasad, K. Toland, M.Aftalion, K. Anastasiou, E. Passey, H. Rakoczi, P.R. Utting, R.Walker, S.G. Bramsiepe, V. Belwanshi, A. Noack, R.P. Middlemiss, D.J. Paul and G.D. Hammond

"Surface-Normal Illuminated Pseudo-Planar Ge-On-Si Avalanche Photodiodes With High Gain And Low Noise" Optics Express 32(11), pp. 19449 - 19457 (2024) DOI: 10.1364/OE.521417
F. Fleming, X. Yi,. M.M.A. Mirza, X. Jin, J. Kirdoda, D.C.S. Dumas, L. Saalbach, M. Modak, D.A.S. Muir, C. Smith, C. Coughlan, Q. Tian, R.W. Millar, J.P.R. David, D.J. Paul and G.S. Buller

"Near-infrared light trapping and avalanche multiplication in silicon epitaxial microcrystals" Advanced Optical Materials 12(14), 2302568 (2024) DOI: 10.1002/adom.202302568
V. Falcone, A. Barzaghi, F .Signorelli, J. Valente, C. Zucchetti, R. Bergamaschini, A. Ballabio, F. Bottegoni, F. Zappa, F. Montalenti, L. Miglio, K. Volz, D.J. Paul, A. Tosi and G. Isella

Integrating MEMS and Silicon-Nitride Photonic Integrated Circuits for Atomic Systems 2024 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Bridgetown, Barbados, 15-17 Jul (2024) 10.1109/SUM60964.2024.10614497
U. Hawley, J. Januszewicz, Z. McConkey, M. Sinclair, E. Di Gaetano, M Sorel, K. Gallacher and D.J. Paul

"Quartz Circular Polarising Optical Window at 80°C for MEMS Vapour Cells" 2024 IEEE Photonics Society Summer Topicals Meeting Series (SUM), Bridgetown, Barbados, 15-17 Jul (2024) 10.1109/SUM60964.2024.10614545
Z.P. McConkey, U. Hawley, M. Sinclair, J. Januszewicz, K. Gallacher and D.J. Paul

"Decoupling the dark count rate contributions in Ge-on-Si single photon avalanche diodes" Proceedings SPIE 12895, Quantum Sensing and Nano Electronics and Photonics XX; 1289505 (2024)- DOI: 10.1117/12.3001450
D.C.S. Dumas, C. Coughlan, C. Smith, M.M. Mirza, J. Kirdoda, F. Fleming, C. McCarthy, H. Mowbray, X. Yi, L. Saalbach, G.S. Buller, D.J. Paul and R.W. Millar

"Ge-on-Si single photon avalanche diode performance enhancement with photonic crystal nano-hole arrays" Proceedings SPIE 12880, Physics and Simulation of Optoelectronic Devices XXXII; 1288006 (2024) - DOI: 10.1117/12.3001610
C. McCarthy, C. Smith, H. Mowbray, D.J. Paul and R.W. Millar

"High extinction ratio Mach Zehnder switches for cold atom rubidium applications" SPIE PC12889, Integrated Optics: Devices, Materials, and Technologies XXVIII; PC1288913 (2024) 10.1117/12.3001733
U. Hawley, K. Gallacher, M.M. Mirza and D.J. Paul

"Silicon nitride optical phased array for waveguide integration of atomic vapour MEMS cells" Proceedings SPIE PC129123 Quantum Sensing, Imaging, and Precision Metrology II PPC129123H (2024) DOI: 10.1117/12.3001475
K. Gallacher, E. Di Gaetano, J. Januszewicz, S. Dyer, J. McGilligan, P. Griffin, E. Riis, M.Sorel and D.J. Paul

"Environmental stability of MEMS gravimeters" EGU General Assembly 2024 EGU24-19666 (2024) DOI: 10.5194/egusphere-egu24-19666
E. Passey, A. Prasad, K. Toland, K. Anastasiou, D.J. Paul and G.D. Hammond

2023

"Single-photon detection for long-range imaging and sensing" Optica 10, pp. 1124 - 1141 (2023) - DOI: 10.1364/OPTICA.488853
R. H. Hadfield, J. Leach, F. Fleming, D.J. Paul, C.H. Tan, J.S. Ng, R.K. Henderson and G.S. Buller

"Afterpulsing in Ge-on-Si Single-Photon Avalanche Diodes" IEEE Photonics Technology Letters 35(17), pp. 959-962 (2023) - DOI: 10.1109/LPT.2023.3289653
X. Yi, Z. Greener, F. Fleming, J. Kirdoda, D.C.S. Dumas, L. Saalbach, D.A.S. Muir, L. Ferre-Llin, R.W. Millar, D.J. Paul and G.S. Buller,

"Unintentional p-type conductivity in intrinsic Ge-rich SiGe/Ge heterostructures grown on Si(001)" Applied Physics Letters 122, 243503 (2023) - DOI: 10.1063/5.0152962
H. Tetzner, W. Seifert, O. Skibitzki, Y. Yamamoto, M. Lisker, M. M. Mirza, I. A. Fischer, D. J. Paul, M. De Seta and G. Capellini

"Chip-Scale Packages for a Tunable Wavelength Reference and Laser Cooling Platform" Physical Review Applied 19, 044015 (2023) - DOI: 10.1103/PhysRevApplied.19.044015
S. Dyer, K. Gallacher, U. Hawley, A. Bregazzi, P.F. Griffin, A.S. Arnold, D.J. Paul, E. Riis and J.P. McGilligan

"Silicon-Nitride Photonic Integrated Circuits for Atomic Systems" IEEE Photonics Society Summer Topicals Meetings Series (SUM 2023), Giardini Naxos, Italy, 17-19 July (2023) - DOI:
K. Gallacher, E. Di Gaetano, S. Dyer, B. Kelliehor, J.P. McGilligan, M. Sinclair, U. Hawley, A.S. Arnold, P.F. Griffin, M. Sorel, E. Riis and D.J. Paul

"GALETTE: a Lightweight XDP Dataplane on your Raspberry Pi" IFIP Networking 2023, Barcelona, Spain (2023) - DOI: 10.23919/IFIPNetworking57963.2023.10186412
K. Simpson, C. Williamson, D.J. Paul and D.P. Pezaros

"Single-mode Distributed Feedback Lasers for ⁸⁵Rb Two-Photon Quantum Technology Systems" CLEO: Applications and Technology paper AM2N.5 (2023) DOI: 10.1364/CLEO_AT.2023.AM2N.5
E. Di Gaetano, B. Keliehor, P. Griffin, M. Sorel, E. Riis and D.J. Paul

"Effect of Passivation on Selectively Grown Sub-µm Ge-on-Si Single Photon Avalanche Diode Detectors" In: 2023 IEEE Silicon Photonics Conference (SiPhotonics), Arlington, VA, USA, 04-07 Apr 2023, ISBN 9781665486552 - DOI: 10.1109/SiPhotonics55903.2023.10141911
C. Coughlan, M.M.A. Mirza, J. Kirdoda, D. Dumas, C. Smith, C. McCarthy, R.W. Millar, D.J. Paul

"Variation of sidewall passivation on sub-μm selectively grown Ge-on-Si devices towards single photon avalanche detectors" Proceedings SPIE 12417, 124170M (2023) - DOI: 10.1117/12.2665493
C. Coughlan, M.M.A. Mirza, J. Kirdoda, D. Dumas, C. Smith, C. McCarthy, H. Mowbray, S. Watson, R.W. Millar, D.J. Paul

"Simulation and design optimization of germanium-on-silicon single photon avalanche diodes" Proceedings SPIE 14226, 124260S (2023) - DOI: 10.1117/12.2650154
C. Smith, J. Kirdoda, D.C.S. Dumas, Co.Coughlan, C. McCarthy, H. Mowbray, M. Mirza, F. Fleming, X. Yi, L. Saalbach, G.S. Buller, D.J. Paul, R.W. Millar

"Sub-4 kHz Linewidth Distributed Feedback Lasers at 778.1 nm Wavelength for Two-Photon Rb Spectroscopy" SPIE Photonics West 2023, San Francisco, USA, 28 Jan to 03 Feb (2023)
E. Di Gaetano, B. Keliehor, P.F. Griffin, M. Sorel E. Riis and D.J. Paul

"Compact microresonator-based frequency combs for portable optical clocks" Proceedings SPIE PC12335 Quantum Technology: Driving Commercialisation of an Enabling Science III, PC1233503 (2023) DOI: 10.1117/12.2646841
F.E. Ayi-Yovo, M. Sinclair, K. Gallacher, J. Daykin, V. Apostolopoulos, D.J. Paul, and J.E. Silver

"Ge and Si Microcrystal Photodetectors with Enhanced Infrared Responsivity" 2023 IEEE Nanotechnology Materials and Devices Conference (NMDC) pp. 105-106 (2023) DOI: 10.1109/NMDC57951.2023.10343764
V. Falcone, A. Barzaghi, F .Signorelli, R. Bergamaschini, J. Valente, D.J. Paul, A. Tosi and G. Isella

2022

"A tuneable wavelength reference for chip-scale laser cooling" arXiv 2212.02853 (2022) - DOI: 10.48550/arXiv.2212.02853
S. Dyer, K. Gallacher, U. Hawley, A. Bregazzi, P.F. Griffin, A.S. Arnold, D.J. Paul, E. Riis and J.P. McGilligan

"Investigation of temperature sensitivity of a MEMS gravimeter based on geometric anti-spring" Review of Scientific Instruments 93, 125002 (2022) - DOI: 10.1063/5.0114664
V. Belwanshi, A. Prasad, K. Toland, R. Middlemiss, D.J. Paul and G.D. Hammond

"A 19 day earth tide measurement with a MEMS gravimeter" Scientific Reports 12, 13091 (2022) - DOI: 10.1038/s41598-022-16881-1
A. Prasad, R.P. Middlemiss, A. Noack, K. Anastasiou, S.G. Bramsiepe, K.Toland, P.R. Utting, D.J. Paul and G.D. Hammond

"Micro-fabricated components for cold atom sensors" Review of Scientific Instruments 93, 091101 (2022) - DOI: 10.1063/5.0101628
J.P. McGilligan, K. Gallacher, P.F. Griffin, D.J. Paul, A.S. Arnold and E. Riis

“On-Chip Infrared Photonics with Si-Ge-Heterostructures: what is next?" APL Photonics 7(5), 050901 (2022) - DOI: 10.1063/5.0078608
I.A. Fischer, M. Brehm, M. De Seta, G. Isella, D.J Paul, M. Virgilio and G. Capellini

“Silicon nitride waveguide polarization rotator and polarization beam splitter for chip-scale atomic systems" APL Photonics 7(4), 046101 (2022) - DOI: 10.1063/5.0077738 - Supplementary material
K. Gallacher, P.F. Griffin, E. Riis, M. Sorel and D.J. Paul

"Invited Review: Micro-fabricated components for cold atom sensors" arXiv 2208.00680 (2022) - DOI: 10.48550/ARXIV.2208.00680
J.P. McGilligan, K. Gallacher, P.F. Griffin, D.J. Paul, A.S. Arnold and E. Riis

"Investigation of temperature sensitivity of a geometric anti-spring based MEMS gravimeter" arXiv 2209.02172 (2022) - DOI: 10.48550/arXiv.2209.02172
V. Belwanshi, A. Prasad, K. Toland, R. Middlemiss, D.J. Paul and G.D. Hammond

“Single photon avalanche detector, method for use therefore and method for its manufacture" US Patent App. 17/274,914
D.J. Paul, D. Dumas, J. Kirdoda, R.W. Millar, M.M. Mirza, G.S. Buller, P. Vines and K. Kuzmenko

"Si₃N₄ Waveguide Polarization Components for Atomic Systems" 2012 IEEE Photonics Conference (IPC) 2022, (2022) - DOI: 10.1109/IPC53466.2022.9975656
K. Gallacher, P.F. Griffin, E. Riis, M. Sorel and D.J. Paul

"Single-mode Distributed Feedback Lasers for ⁸⁷Rb Two-Photon Quantum Technology Systems" 2012 IEEE Photonics Conference (IPC) 2022, (2022) - DOI: 10.1109/IPC53466.2022.9975651
E. Di Gaetano, P.F. Griffin, B. Keliehor, M. Sorel, E. Riis and D.J. Paul

"Design, fabrication and performance of planar Ge-on-Si single-photon avalanche diode at 1550 nm" SPIE Emerging Imaging and Sensing Technologies for Security and Defence VII 12274, 122740B (2022) - DOI: 0.1117/12.2637854
X. Yi, F. Fleming, J. Kirdoda, R.W. Millar, B. Benakaprasad, C. Coughlan, C. Smith, M.M. Mirza, S. Watson, L. Saalbach, D.J. Paul and G.S. Buller

"Silicon Nitride Waveguide Polarization Components for Rubidium Saturated Absorption Spectroscopy On-Chip" Conference on Lasers and Electro-Optics 2022, JW3A.40 (2022) - DOI: http://opg.optica.org/abstract.cfm?URI=CLEO_SI-2022-JW3A.40
K. Gallacher, P.F. Griffin, E. Riis, M. Sorel and D.J. Paul

“DFB Lasers, MEMS Cells & Photonic Components for Rb Atomic Systems" KTN QT Network Event, 19th Jan 2022
E. Di Gaetano, K. Gallacher, M. Sinclair, U. Hawley, M. Sorel & D.J. Paul

“THz electroluminescence from n-type Ge/SiGe quantum cascade structures" SPIE Silicon Photonics XVII, PC120096 (2022) - DOI: 10.1117/12.2606541
G. Scalari, D. Stark, M. Mirza, L. Persichetti, M. Montanari, S. Markmann, M. Beck, T. Grange, S. Birner, M. Virgilio, C. Ciano, M. Ortolani, C. Corley-Wiciak, G. Capellini, L. Di Gaspare, M. De Seta, D.J. Paul and J. Faist

“THz silicon photonics: an intersubband emitter" SPIE Quantum Sensing and Nano Electronics and Photonics XVIII, PC120090D (2022) - DOI: 10.1117/12.2609437
D. Stark, M. Mirza, L. Persichetti, M. Montanari, S. Markmann, M. Beck, T. Grange, S. Birner, M. Virgilio, C. Ciano, M. Ortolani, C. Corley-Wiciak, G. Capellini, L. Di Gaspare, M. De Seta, D.J. Paul, J. Faist and G. Scalari

“A MEMS gravimeter with multi-axis gravitational sensitivity" 2022 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL) pp. 1-4 (2022) - DOI: 10.1109/INERTIAL53425.2022.9787754
R.P. Middlemiss, P. Campsie, Paul, W. Cunningham, R. Douglas, V. McIvor, V. Belwanshi, Vinod J. Hough, S. Rowan, D.J. Paul, A. Prasad and G.D. Hammond

“A Simulation Study of the Temperature Sensitivity and Impact of Fabrication Tolerances on the Performance of a Geometric Anti-Spring Based MEMS Gravimeter" 2022 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL) pp. 1-4 (2022) - DOI: 10.1109/INERTIAL53425.2022.9787761
V. Belwanshi, A. Prasad, K. Toland, K. Anastasiou, S. Bramsiepe, R. Middlemiss, D.J. Paul and G.D. Hammond

2021

“Photonic Band Gap and Light Routing in Self-Assembled Lattices of Epitaxial Ge-on-Si Microstructures" Physical Review Applied 16, 064024 (2021) - DOI: https://doi.org/10.1103/PhysRevApplied.16.064024
J. Pedrini, A. Barzaghi, J. Valente, D.J. Paul, G. Isella and F. Pezzoli

“Ge-on-Si single-photon avalanche diode detectors for short-wave infrared wavelengths" Journal of Physics: Photonics 4(1), 012001 (2021) - DOI: https://doi.org/10.1088/2515-7647/ac3839
F. Thorburn, X. Yi, Z.M. Greener, J. Kirdoda, R.W. Millar, L.L. Huddleston, D.J. Paul and G.S. Buller

“Current leakage mechanisms related to threading dislocations in Ge-rich SiGe heterostructures grown on Si (001)" Applied Physics Letters 118(15), 153504 (2021) - DOI: https://doi.org/10.1063/5.0064477
H. Tetzner, I.A. Fischer, O. Skibitzki, M.M. Mirza, C.L. Manganelli, G. Luongo, D. Spirito, D.J. Paul, M. De Seta and G. Capellini

“A Nineteen Day Earth Tide Measurement with a MEMS Gravimeter" arXiv :2109.13715 (2021) - DOI: https://arxiv.org/abs/2109.13715
A. Prasad, R. P. Middlemiss, K. Anastasiou, S. G. Bramsiepe, A. Noack, D. J. Paul, K. Toland, P. R. Utting, G. D. Hammond

“Faceting of Si and Ge crystals grown on deeply patterned Si substrates in the kinetic regime: phase-field modelling and experiments" Scientific Reports 11(1),18825 (2021) - DOI: 10.1038/s41598-021-98285-1
M. Albani, R. Bergamaschini, A. Barzaghi, M. Salvalaglio, J. Valente, D.J. Paul, A. Voigt, G. Isella and F. Montalenti

“Field-resolved detection of the temporal response of a single plasmonic antenna in the mid-infrared" Optica 8(6), pp. 898 - 903 (2021) - DOI: 10.1364/OPTICA.420683
M.P. Fischer, N. Maccaferri, K. Gallacher, J. Frigerio, G. Pellegrini, D.J. Paul, G. Isella, A. Leitenstorfer, P. Biagioni and D. Brida

“THz intersubband electroluminescence from n-type Ge/SiGe quantum cascade structures” Applied Physics Letters 118, 101101 (2021) - DOI: 10.1063/5.0041327
D. Stark, M. Mirza, L. Persichetti, M. Montanari, S. Markmann, M. Beck, T. Grange, S. Birner, M. Virgilio, C. Ciano, M. Ortolani, C. Corley, G. Capellini, L. Di Gaspare, M. De Seta, D.J. Paul, J. Faist and G. Scalari

“A MEMS gravimeter with multi-axis gravitational sensitivity" arXiv 2102.05528 (2021) - https://arxiv.org/abs/2102.05528
R.P. Middlemiss, P. Campsie, Wi. Cunningham, R. Douglas, V. McIvor, J. Hough, S. Rowan, D.J. Paul, A. Prasad, G.D. Hammond

"Terahertz intersubband electroluminescence from n-type germanium quantum wells" 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) paper cc_7_4 - 10.1109/CLEO/Europe-EQEC52157.2021.9541838
D. Stark, M. Mirza, L. Persichetti, M. Montanari, S. Markmann, M. Beck, T. Grange, S. Birner, M. Virgilio, C. Ciano, M. Ortolani, C. Corley, G. Capellini, L. Di Gaspare, M. De Seta, D. J. Paul, J. Faist and G. Scalari

"Ge-on-Si Single-Photon Avalanche Diode Detectors with Low Noise Equivalent Power in the Short-Wave Infrared" 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) paper ce_2_2 - 10.1109/CLEO/Europe-EQEC52157.2021.9542785
R.W. Millar, J. Kirdoda, F. Thorburn, L.L. Huddleston, D.C.S. Dumas Z.M. Greener, K. Kuzmenko, P. Vines, L. Ferre-Llin, X. Yi, S. Watson, B. Benakaprasad, A. Bruce, G.S. Buller & D.J. Paul

“THz intersubband electroluminescence from n-type Ge/SiGe quantum cascade structures” arXiv 2101.05518 (2021) - https://arxiv.org/abs/2101.05518
D. Stark, M. Mirza, L. Persichetti, M. Montanari, S. Markmann, M. Beck, T. Grange, S. Birner, M. Virgilio, C. Ciano, M. Ortolani, C. Corley, G. Capellini, L. Di Gaspare, M. De Seta, D.J. Paul, J. Faist and G. Scalari

“THz Intersubband Emitter based on Silicon” In: 27th International Semiconductor Laser Conference (ISLC 2021), Potsdam, Germany, 10-14 Oct 2021 - DOI: 10.1109/ISLC51662.2021.9615725
D. Stark, M. Mirza, L. Persichetti, M. Montanari, S. Markmann, M. Beck, T. Grange, S. Birner, M. Virgilio, C. Ciano, M. Ortolani, C. Corley, G. Capellini, L. Di Gaspare, M. De Seta, D. J. Paul, J. Faist and G. Scalari

“Pseudo-planar Ge-on-Si single photon avalanche diode detector with record low noise-equivalent power" SPIE Proceedings Volume 11881, 118810F (2021) - DOI: 10.1117/12.2576175
R.W. Millar, J. Kirdoda, F. Thorburn, X. Yi, Z.M. Greener, L. Huddleston, B. Benakaprasad, S. Watson, C. Coughlan, G.S. Buller and D.J. Paul

“Ge-on-Si based mid-infrared plasmonics"” SPIE Proceedings Volume 11691, Silicon Photonics XVI; 116910M (2021) - DOI: 10.1117/12.2576175
J. Frigerio, L. Baldassarre, G. Pellegrini, M.P. Fischer, K. Gallacher, R. Millar, A. Ballabio, D. Brida, G. Isella, E. Napolitani, D.J. Paul, M. Ortolani and P. Biagioni

“Sub-MHz linewidth distributed feedback laser at 780.24-nm emission wavelength for ⁸⁷Rb applications" Proceedings Volume 11705, Novel In-Plane Semiconductor Lasers XX; 117050P (2021) - DOI: 10.1117/12.2582524
E. Di Gaetano, S. Watson, E. McBrearty, M. Sorel and D.J. Paul

“THz emission from n-type Ge/SiGe quantum cascade structures"” SPIE Proceedings Volume 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV; 116851A (2021) - DOI: 10.1117/12.2578823
D. Stark, M. M. A. Mirza, L. Persichetti, M. Montanari, L. Di Gaspare, M. De Seta, M. Virgilio, M. Ortolani, G. Capellini, T. Grange, S. Birner, D. J. Paul, J. Faist and G. Scalari

“Ge on Si Photonics Platform for Mid-Infrared Sensors” 2021 IEEE Photonics Society Summer Topicals Meeting Series (SUM), pp. 1-2 (2021) - DOI: 10.1109/SUM48717.2021.9505799
K. Gallacher, U. Griškevičiūte, R.W. Millar and D.J. Paul

“Self-assembled Ge-on-Si microcrystals for single photon detection” Micro and Nano Engineering Conference, Turin, Italy, 20th - 23rd September (2021)
A. Barzaghi, S. Firoozabadi, F. Signorelli, M. Salvalaglio, R. Bergamaschini, A. Ballabio, V. Falcone, A. Beyer, M. Albani, J. Valente, A. Voigt, D. J. Paul, L. Miglio, F. Montalenti, K. Volz , A. Tosi and G. Isella

2020

"High sensitivity Ge-on-Si single-photon avalanche diode detectors" Optics Letters 45(23) pp. 6406 - 6409 (2020) - DOI 10.1364/OL.396756
L. Ferre Llin, J. Kirdoda, F. Thorburn, L. L. Huddleston, Zoe M. Greener, K. Kuzmenko, P. Vines, D.C.S. Dumas, R.W. Millar, G.S. Buller and D.J. Paul

"Measurement of acceleration" US Patent No. US 10,802,042B2, 13^th October 2020
P. Campsie, G.D. Hammond, R.P. Middlemiss, D.J. Paul and A. Samarelli

"Single photon avalanche detector, method for use therefore and for its manufacture" Patent application GB1814688.6 Priority date 10 September 2018, PCT/GB2019/052508 and WO 2020/053564 A1
D.J. Paul, D. Dumas, J. Kirdoda, R.W. Millar, M.M. Mirza, G.S. Buller, P. Vines and K. Kuzmenko

"Sub-MHz linewidth 780.24 nm distributed feedback laser for ⁸⁷Rb applications" Optics Letters 45(13) pp. 3529 - 3532 (2020) - DOI: 10.1364/OL.394185
E. Di Gaetano, S. Watson, E. McBrearty, M. Sorel and D.J. Paul

"Characterization of integrated waveguides by atomic-force-microscopy-assisted mid-infrared imaging and spectroscopy" Optics Express 28(15), pp. 22186 - 22199 (2020) - DOI: 10.1364/OE.393748
K Gallacher, R.W. Millar, D.J. Paul, J. Frigerio, A. Ballabio, G. Isella, F. Rusconi, P. Biagioni, V. Giliberti, A. Sorgi, L. Baldassarre and M. Ortolani

"Self-Assembly of Nanovoids in Si Microcrystals Epitaxially Grown on Deeply Patterned Substrates" Crystal Growth & Design 20(5), pp. 2914 - 2920 (2020) - DOI: 10.1021/acs.cgd.9b01312
A. Barzaghi, S. Firoozabadi, M. Salvalaglio, R. Bergamaschini, A. Ballabio, A. Beyer, M. Albani, J. Valente, A. Voigt, D.J. Paul, L. Miglio, F. Montalenti, K. Volz and G. Isella

"Terahertz absorption-saturation and emission from electron-doped germanium quantum wells" Optics Express 28(5), pp. 7245 - 7258 (2020) - DOI: https://doi.org/10.1364/OE.381471
C. Ciano, M. Virgilio, L. Bagolini, L. Baldassarre, A. Pashkin, M. Helm, M. Montanari, L. Persichetti, L. Di Gaspare, G. Capellini, D.J. Paul, G. Scalari, J. Faist, M. De Seta, and M. Ortolani

"Ultra-Broadband Mid-infrared Ge-on-Si Waveguide Polarization Rotator" APL Photonics 5(2), 026102 (2020) - DOI: 10.1063/1.5134973
K. Gallacher, R.W. Millar, U. Griškevičiūtė, M. Sinclair, M.Sorel, L. Baldassarre, M. Ortolani, R. Soref, and D.J. Paul

"Ge-on-Si waveguides for sensing in the molecular fingerprint regime" Optics Express 28(4), pp. 5749 - 5757 (2020)- DOI: https://doi.org/10.1364/OE.382356
U. Griškevičiūtė, R.W. Millar, K. Gallacher, J. Valente and D.J. Paul

"Design and simulation of losses in Ge/SiGe terahertz quantum cascade laser waveguides" Optics Express 28(4) pp. 4786 - 4800 (2020) - DOI: https://doi.org/10.1364/OE.384993
K. Gallacher, M. Ortolani, K. Rew, C. Ciano, L. Baldassarre, M. Virgilio, G. Scalari, J. Faist, L. Di Gaspare, M. De Seta, G. Capellini, T. Grange, S. Birner, and D.J. Paul
Terahertz complex refractive index data of silicon, germanium and silicon germanium

"Electron Population Dynamics in Optically Pumped Asymmetric Coupled Ge/SiGe Quantum Wells: Experiment and Models" Photonics 7(1), 2 (2020) - DOI: 10.3390/photonics7010002
C. Ciano, M. Virgilio, L. Bagolini, L. Baldassarre, A. Rossetti, A. Pashkin, M. Helm, M. Montanari, L. Persichetti, L. Di Gaspare, G. Capellini, D.J. Paul, G. Scalari, J. Faist, M. De Seta and M. Ortolani

"1.4 million Q factor Si₃N₄ micro-ring resonator at 780 nm wavelength for chip-scale atomic systems" Optics Express 28(3), pp. 4010 - 4020 (2020) - DOI: https://doi.org/10.1364/OE.381224
M. Sinclair, K. Gallacher, M. Sorel, J. Bayley, E. McBrearty, R.W. Millar, S. Hild, and D.J. Paul

"The NEWTON-g Gravity Imager: Toward New Paradigms for Terrain Gravimetry Frontiers in Earth Science 8, 573396 (2020) - DOI: 10.3389/feart.2020.573396
D. Carbone, L. Antoni-Micollier, G. Hammond, E. de Zeeuw-van Dalfsen, E. Rivalta, C. Bonadonna, A. Messina, J. Lautier-Gaud, K. Toland, M. Koymans, K. Anastasiou, S. Bramsiepe, F. Cannavo, D. Contrafatto, C. Frischknecht, F. Greco, G. Marocco, R. Middlemiss, V. Menoret, A. Noack, L. Passarelli, D.J. Paul , A. Prasad, G. Siligato and P. Vermeulen

"3D LIDAR imaging using Ge-on-Si single-photon avalanche diode detectors" Optics Express 28(2), pp. 1330 - 1344 (2020) - DOI: 10.1364/OE.383243
K. Kuzmenko, P. Vines, A. Halimi, R.J. Collins, A. Maccarone, A. Mccarthy, Z.M. Greener, J. Kirdoda, D.C.S. Dumas, L. Ferre Llin, M.M. Mirza, R.W. Millar, D.J. Paul and G.S. Buller

"Development of a MEMs gravimeter for drone-based field surveys" EGU General Assembly Conference Abstracts p 20906 (2020) - DOI: 10.5194/egusphere-egu2020-20906
E. Passey, G. Hammond, S. Bramsiepe, A. Prasad, R. Middlemiss, D.J. Paul, R. Walker, A. Noack and K. Anastasiou

"A High-Sensitivity, Low-Drift MEMS Relative Gravimeter for Multi-Pixel Imaging Applications" EGU General Assembly Conference Abstracts p 18528 (2020) DOI: 10.5194/egusphere-egu2020-18528
A. Prasad, K. Toland, A. Noack, K. Anastasiou, R. Middlemiss, D.J. Paul and G.D. Hammond

"High Efficiency, Planar Geometry Germanium-on-Silicon Single- Photon Avalanche Diode Detectors" Proceedings of the SPIE 11386, 113860N-1 (2020) - DOI: 10.1117/12.2559620
F.E. Thorburn, L.L. Huddleston, J. Kirdoda, R.W. Millar, L. Ferre-Llin, X. Yi, D.J. Paul and G.S. Buller

"Narrow Linewidth Distributed Feedback Diode Lasers for Cooling in Cold Atom Systems" CLEO: Applications and Technology, AF3I. 5 (2020)
S. Watson, E. Di Gaetano, E. McBrearty, M. Sorel and D.J. Paul

"1.4 Million Q-Factor 780 nm Wavelength Si₃N₄ Micro-rings for Chip-Scale Atomic Systems"
CLEO: Science and Innovations, STu4O. 8 (2020)
M. Sinclair, K. Gallacher, M. Sorel, J.C. Bayley, E. McBrearty, R.W. Millar, S. Hild, D.J. Paul

"Ge-on-Si Single Photon Avalanche Diode Detectors for LIDAR in the Short Wave Infrared" CLEO: Applications and Technology, AF2I. 6 (2020)
R.W. Millar, J. Kirdoda, K. Kuzmenko, P. Vines, A. Halimi, R.J. Collins, A. Maccarone, A. McCarthy, Z.M. Greener, F. Thorburn, D.C.S. Dumas, L. Ferre-Llin, M.M. Mirza, D.J. Paul, G.S. Buller

"Ge-on-Si Waveguide Polarization Rotator Operating in the 8-14 µm Atmospheric Transmission Window" CLEO: Science and Innovations, STh4L. 8 (2020)
K. Gallacher, R.W. Millar, U. Griškevičiūtė, M. Sinclair, M. Sorel, L. Baldassarre, M. Ortolani, R. Soref, D.J. Paul

"Ge-on-Si Mid-Infrared Waveguide Platform for Molecular Fingerprint Sensing" 2020 22nd International Conference on Transparent Optical Networks (ICTON)
K. Gallacher, R. W. Millar, U. Griskeviciute, M. Sinclair, M. Sorel, L. Baldassarre, M. Ortolani, R. Soref and D. J. Paul

"Distributed Feedback Lasers for Quantum Cooling Applications" 2020 22nd International Conference on Transparent Optical Networks (ICTON)
S. Watson, S. Gwyn, E. Di Gaetano, E. McBrearty, T. J. Slight, M. Knapp, S. Stanczyk, S. Grzanka, A. Yadav, K. E. Docherty, E. Rafailov, P. Perlin, S. Najda, M. Leszczynski, M. Haji, M. Sorel, D. J. Paul and A. E. Kelly

"Planar geometry Ge‐on‐Si single-photon avalanche diode detectors for the short-wave infrared" Proceedings of the SPIE 11540 115400O (2020) DOI: 10.1117/12.2575863
F.E. Thorburn, L.L. Huddleston, X. Yi, G.S. Buller, J. Kirdoda, R.W. Millar, L. Ferre Llin and D.J. Paul

2019

"High performance planar germanium-on-silicon single-photon avalanche diode detectors" Nature Communications 10, 1086 (2019) - DOI: 10.1038/s41467-019-08830-w
P. Vines, K. Kuzmenko, J. Kirdoda, D.C.S. Dumas, M.M. Mirza, R.W. Millar, D.J. Paul and G.S. Buller

"Room temperature operation of n-type Ge/SiGe terahertz quantum cascade lasers predicted by non-equilibrium Green's functions" Applied Physics Letters 114, 111102 (2019) - DOI: 10.1063/1.5082172
T. Grange, D. Stark, G. Scalari, J. Faist, L. Persichetti, L. Di Gaspare, M. De Seta, M. Ortolani, D.J. Paul, G. Capellini, S. Birner, and M. Virgilio

"Control of Electron-State Coupling in Asymmetric Ge/Si-Ge Quantum Wells" Physical Review Applied 11, 014003 (2019) - DOI: 10.1103/PhysRevApplied.11.014003
C. Ciano, M. Virgilio, M. Montanari, L. Persichetti, L. Di Gaspare, M. Ortolani, L. Baldassarre, M.H. Zoellner, O. Skibitzki, G. Scalari, J. Faist, D.J. Paul, M. Scuderi, G. Nicotra, T. Grange, S. Birner, G. Capellini and M. De Seta

"Strain analysis of a Ge micro disk using precession electron diffraction" Journal of Applied Physics 126(23), 235701 (2019) - DOI: 10.1063/1.5113761
A. Bashir , R.W. Millar , K. Gallacher , D.J. Paul , A.D. Darbal , R. Stroud , A. Ballabio , J. Frigerio , G. Isella , and I. MacLaren,

"Thermal emissivity of silicon heterojunction solar cells" Solar Energy Materials and Solar Cells 201, 110051 (2019) - DOI: 10.1016/j.solmat.2019.110051
D. Alonso-Alvarez, A. Augusto, P. Pearce, L. Ferre Llin, A. Mellor, S. Bowden, D.J. Paul and N. Ekins-Daukes

"Strain analysis of Ge micro disk using precession electron diffraction" arXiv preprint arXiv:1906.02484 (2019) - https://arxiv.org/abs/1906.02484
A. Bashir, R. Millar, K. Gallacher, D.J. Paul, A. Darbal, R. Stroud, A. Ballabio, J. Frigerio, G. Isella, I. MacLaren

"MEMS Gradiometers for Attitude Determination on CubeSats" 33rd Annual AIAA/USU Conference on Small Satellites (2019) - Web: https://digitalcommons.usu.edu/smallsat/2019/all2019/157/
G. Marocco, R. P. Middlemiss, A. Prasad, S. Hild, J. Hough, S. Rowan, G. D. Hammond, D. J. Paul, A. Strain, P. Anderson, H. Jeffrey

"n-type Ge/SiGe Multi Quantum-Wells for a THz Quantum Cascade Laser" ECS Transactions 93, pp. 63-66 - DOI: 10.1149/09301.0063ecst
C. Ciano, L. Di Gaspare, M. Montanari, L. Persichetti, L. Baldassarre, M. Ortolani, G. Capellini, O. Skibitzki, M. Zoellner, J. Faist, G. Scalari, D. Stark, D.J. Paul, K. Rew, O. Moutanabbir, S. Mukherjee, T. Grange, S. Birner, M. Virgilio and M. De Seta

"Electron-doped SiGe Quantum Well Terahertz Emitters pumped by FEL pulses" 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) (2019) - DOI: 10.1109/IRMMW-THz.2019.8873894
C. Ciano, M. Montanari, L. Persichetti, L. Di Gaspare, M. Virgilio, L. Bagolini, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, K. Rew, D.J. Paul, T. Grange, S. Birner, A. Pashkin, M. Helm, L. Baldassarre, M. Ortolani and M. De Seta

"High-Quality n-Type Ge/SiGe Multilayers for THz Quantum Cascade Lasers" 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) (2019) - DOI: 10.1109/IRMMW-THz.2019.8874294
M. Montanari, C. Ciano, L. Persichetti, L. Di Gaspare, M. Virgilio, G. Capellini, M. Zoellner, O. Skibitzki, D. Stark, G. Scalari, J. Faist, D.J. Paul, T. Grange, S. Birner, M. Scuderi, G. Nicotra, O. Moutanabbir, S. Mukherjee, L. Baldassarre, M. Ortolani and M. De Seta

"Si-based n-type THz Quantum Cascade Emitter" 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) (2019) - DOI: 10.1109/IRMMW-THz.2019.8874354
D. Stark, L. Persichetti, M. Montanari, C. Ciano, L. Di Gaspare, M. De Seta, M. Zooellner, O. Skibitzki, G. Capellini, M. Ortolani, L. Baldassarre, M. Virgilio, T. Grange, S. Birner, K. Rew, D.J. Paul, J. Faist and G. Scalari

"Geiger Mode Ge-on-Si Single-Photon Avalanche Diode Detectors" 2019 IEEE 16th International Conference on Group IV Photonics (GFP) Volume 1949-209X, pp. 1 -- 2 (2019) - DOI: 10.1109/GROUP4.2019.8853918
J. Kirdoda, D.C.S. Dumas, K. Kuzmenko, P. Vines, Z. M. Greener, R. W. Millar, M. M. Mirza, G. S. Buller, and D. J. Paul

"Molecular Fingerprint Sensing using Ge-on-Si Waveguides" 2019 IEEE 16th International Conference on Group IV Photonics (GFP) Volume 1949-209X, pp. 1 -- 2 (2019) - DOI: 10.1109/GROUP4.2019.8853881
R. W. Millar, U. Griškevičiūtė, K. Gallacher, M. Sorel, D. J. Paul, L. Baldassarre and M. Ortolani

"Understanding the Sidewall Dependence of Loss for Ge-on-Si Waveguides in the Mid-Infrared" 2019 IEEE 16th International Conference on Group IV Photonics (GFP) Volume 1949-209X, pp. 1 -- 2 (2019) - DOI: 10.1109/GROUP4.2019.8853945
K. Gallacher, U. Griškevičiūtė, I. MacGilp, R. W. Millar and D. J. Paul

"Ultra Broadband Mid-Infrared Ge-on-Si Polarization Rotator" 2019 IEEE 16th International Conference on Group IV Photonics (GFP) Volume 1949-209X, pp. 1 -- 2 (2019) - DOI: 10.1109/GROUP4.2019.8853922
K. Gallacher, U. Griškevičiūtė, R. W. Millar and D. J. Paul

"Mid-infrared Sensing with Ge on Si Waveguides" (invited) 2019 IEEE Photonics Society Summer Topical Meeting Series (SUM), pp. 1 -- 2 (2019) - DOI: 10.1109/PHOSST.2019.8795039
K. Gallacher, R. Millar, U. Griškevičiūtė, L. Baldassarre, M. Sorel, M. Ortolani and D. J. Paul

"Towards a Mid-infrared Lab-on-chip Sensor Using Ge-on-Si Waveguides" CLEO Europe EQEC 2019, paper CH-4.3 (2019) - Web: http://www.osapublishing.org/abstract.cfm?URI=CLEO_Europe-2019-ch_4_3
R. Millar, U. Griškevičiūtė, K. Gallacher, L. Baldassarre, M. Sorel, M. Ortolani and D.J. Paul

"Ge-on-Si High Efficiency SPADs at 1310 nm" CLEO Europe EQEC 2019, paper EA-P.15 (2019) - Web: http://www.osapublishing.org/abstract.cfm?URI=EQEC-2019-ea_p_15
D.C.S. Dumas, J. Kirdoda, P. Vines, K. Kuzmenko, R.W. Millar, G.S. Buller and D.J. Paul

"High-Q Si₃N₄ ring resonators for locking 780nm GaAs-based distributed feedback laser" CLEO Europe EQEC 2019, paper CB-P.5 (2019) - Web: http://www.osapublishing.org/abstract.cfm?URI=CLEO_Europe-2019-cb_p_5
M. Sinclair, K. Gallacher, R.W. Millar, J.C. Bayley, O. Sharp, F. Mirando, G. Ternent, G. Mills, B. Casey, S. Hild and D.J. Paul

"Non-equilibrium Green’s function simulation of group-IV terahertz quantum cascade lasers" CLEO Europe EQEC 2019, paper CC-2.6 (2019) - DOI:
T. Grange, D. Stark, G. Scalari, J. Faist, L. Persichetti, L. Di Gaspare, M. De Seta, G. Capellini, D.J. Paul, M. Ortolani, S. Birner and M. Virgilio

"n-type Ge/SiGe quantum cascade heterostructures for THz emission" CLEO Europe EQEC 2019, paper CC-3.3 (2019) - Web: http://www.osapublishing.org/abstract.cfm?URI=CLEO_Europe-2019-cc_3_3
D. Stark, L. Persichetti, M. Montanaei, C. Ciano, L. Di. Gaspare, M. De Seta, M. Zoellner, O. Skibitzki, G. Capellini, M. Ortolani, L. Baldassarre, M. Virgilio, T. Grange, S. Birner, K. Rew, D.J. Paul, J. Faist and G. Scalari

"Field-resolved response of plasmonic antenna" CLEO Europe EQEC 2019, paper EG-1.4 (2019) - Web: http://www.osapublishing.org/abstract.cfm?URI=EQEC-2019-eg_1_4
M.P. Fischer, N. Maccaferri, K. Gallacher, J. Frigerio, G. Pellegrini, G. Isella, A. Leitenstorfer, D.J. Paul, P. Biagioni and D. Brida

"Planar geometry Ge-on-Si SPAD detectors for the short-wave infrared" SPIE Advanced Photon Counting Techniques XIII 10978, 109780P (2019) - DOI: https://doi.org/10.1117/12.2518858
K. Kuzmenko, P. Vines, Z. Greener, J. Kirdoda, D. Dumas, M.M. Mirza, R. Millar, D.J. Paul, G.S. Buller

"High Efficiency Planar Ge-on-Si Single-Photon Avalanche Diode Detectors" Conference on Lasers and Electro-Optics, paper FF1A.4 (2019) DOI - 10.1364/CLEO_QELS.2019.FF1A.4
J. Kirdoda, L. Ferre Llin, K. Kuzmenko, P. Vines, Z. Greener, D.C.S. Dumas, R.W. Millar, M.M. Mirza, G.S. Buller and D.J. Paul

"Integrated DFB Lasers on Si₃N₄ Photonic Platform for Chip-Scale Atomic Systems" Conference on Lasers and Electro-Optics, paper STu4O.7 (2019) 10.1364/CLEO_SI.2019.STu4O.7
K Gallacher, M. Sinclair, R W. Millar, O. Sharp, F Mirando, G. Ternent, G. Mills, B. Casey and D J. Paul

"Fingerprint mid-infrared sensing with germanium on silicon waveguides" Conference on Lasers and Electro-Optics, paper STh1N.2 (2019) DOI - 10.1364/CLEO_SI.2019.STh1N.2
U. Griškevičiūtė, R.W. Millar, K. Gallacher, L. Baldassarre, M. Sorel, M. Ortolani and D.J. Paul

"Field-Resolved Detection of the Temporal Response of a Mid-Infrared Plasmonic Antenna" Conference on Lasers and Electro-Optics, paper FTh3C.6 (2019) DOI - https://doi.org/10.1364/CLEO_QELS.2019.FTh3C.6
M.P. Fischer, K. Gallacher, J. Frigerio, G. Pellegrini, G. Isella, A. Leitenstorfer, D.J. Paul, P. Biagioni and D. Brida

"Planar geometry Ge-on-Si SPAD detectors for the short-wave infrared" SPIE Advanced Photon Counting Techniques XIII 10978, 109780P - DOI: 10.1117/12.2518858
K. Kuzmenko, P. Vines, Z. Greener, J. Kirdoda, D. Dumas, M.M. Mirza, R. Millar, D.J. Paul, G.S. Buller

"High-efficiency Ge-on-Si SPADs for short-wave infrared" Proceedings SPIE 10914, 1091424 (2019) - DOI: 10.1117/12.2521067
D.C.S. Dumas, J. Kirdoda, R.W. Millar, P. Vines, K. Kuzmenko, G.S. Buller and D.J. Paul

"Low loss germanium-on-silicon waveguides for integrated mid-infrared photonics" Proceedings SPIE 10923, 109230S (2019) - DOI: 10.1117/12.2510009
R.W. Millar, K. Gallacher, U. Griškevičiūtė, L. Baldassarre, M. Sorel, M. Ortolani and D.J. Paul

"Geiger Mode Ge-on-Si Single-Photon Avalanche Diode Detectors" 2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) pp. 1 -- 4 (2019) - DOI: 10.1109/BICOP48819.2019.9059574
J. Kirdoda, D.C.S. Dumas, R.W. Millar, M.M. Mirza, D.J. Paul, K. Kuzmenko, P. Vines, Z. Greener and G.S. Buller

2018

"Plasmonic mid-infrared third harmonic generation in germanium nanoantennas" Light Science and Applications 7, 106 (2018) - DOI: 10.1038/s41377-018-0108-8
M.P. Fischer, A. Riede, K. Gallacher, J. Frigerio, G. Pellegrini, M. Ortolani, D.J. Paul, G. Isella, A. Leitenstorfer, P. Biagioni and D. Brida

"Quantum interference in silicon one-dimensional junctionless nanowire field-effect transistors" Physical Review B 98(23), 235238 (2018) - DOI: 10.1103/PhysRevB.98.235428
F.J. Schupp, M.M. Mirza, D.A. MacLaren, G.A.D. Briggs, D.J. Paul, and J.A. Mol

"Room temperature operation of n-type Ge/SiGe terahertz quantum cascade lasers predicted by non-equilibrium Green's functions" arXiv:1811.12879 - Web: https://arxiv.org/pdf/1811.12879.pdf
T. Grange, D. Stark, G. Scalari, J. Faist, L. Persichetti, L. Di Gaspare, M. De Seta, M. Ortolani, D.J. Paul, G. Capellini, S. Birner, M. Virgilio

"Single photon avalanche detector, method of use therefore and method for its manufacture" GB Patent application no. 1814688.6 (10^th September 2018)
D.J. Paul, D. Dumas, J. Kirdoda, R.W. Millar, M.M. Mirza, G.S. Buller, P. Vines and K. Kuzmenko

"Low loss Ge-on-Si waveguides operating in the 8 to 14 μm atmospheric transmission window" Optics Express 26(20) pp. 25667 - 25675 (2018) - DOI: 10.1364/OE.26.025667
K. Gallacher, R.W. Millar, U. Griškevičiūtė, L. Baldassarre, M. Sorel, M. Ortolani and D.J. Paul

"Benchmarking the Use of Heavily Doped Ge for Plasmonics and Sensing in the Mid-Infrared" ACS Photonics 5(9) pp. 3601 - 3607 (2018) - DOI: 10.1021/acsphotonics.8b00438
G. Pellegrini, L. Baldassare, V. Giliberti, J. Frigerio, K. Gallacher, D.J. Paul, G. Isella, M. Ortolani and P. Biagioni

"Roadmap for the next-generation of hybrid photovoltaic-thermal solar energy collectors" Solar Energy 174 pp. 386 - 398 (2018) - DOI: 10.1016/j.solener.2018.09.004
A. Mellor, D. Alonso Alvarez, I. Guarracino, A. Ramos, A. Riverola Lacasta, L. Ferre Llin, A.J. Murrell, D.J. Paul, D. Chemisana, C.N. Markides, N.J. Ekins-Daukes

"Microelectromechanical system gravimeters as a new tool for gravity imaging" Philosophical Transactions of the Royal Society A 376, 2120 (2018) - DOI: 10.1098/rsta.2017.0291
R.P. Middlemiss, S.G. Bramsiepe, R. Douglas, S. Hild, J. Hough, D.J. Paul, A. Samarelli, S. Rowan, G.D. Hammond,

"Topotactic Anion-exchange in Thermoelectric Nanostructured Layered Tin Chalcogenides with Reduced Selenium Content" Chemical Science 8, pp. 3828-3836 (2018) - DOI: 10.1039/C7SC05190E
G. Han, S. Popuri, H. Greer, R. Zhang, L. Ferre Llin, J.-W. Bos, W. Zhou, M. Reece, D.J. Paul, A. Knox and D. Gregory

"Impact of Randomly Distributed Dopants on Ω-Gate Junctionless Silicon Nanowire Transistors" IEEE Transactions on Electron Devices 65(5) (2018) - DOI: 10.1109/TED.2018.2817919
H. Carrillo-Nunez, M.M. Mirza, D.J. Paul, D.A. MacLaren, A. Asenov, V.P. Georgiev,

"A High Stability Optical Shadow Sensor with Applications for Precision Accelerometers" IEEE Sensors Journal 18(10), pp. 4108-4116 (2018) - DOI: 10.1109/JSEN.2018.2818066
S.G. Bramsiepe, D. Loomes, R.P. Middlemiss, D.J. Paul and G.D. Hammond

"Interfacial sharpness and intermixing in a Ge-SiGe multiple quantum well structure" Journal of Applied Physics 123(3), 035703 (2018) - DOI: 10.1063/1.5001158
A. Bashir, K. Gallacher, R.W. Millar, D.J. Paul, A. Ballabio, J. Frigerio, G. Isella, D. Kriegner, M. Ortolani, J. Barthel and I. MacLaren

"Mid-infrared emissivity of crystalline silicon solar cells" Solar Energy Materials and Solar Cells 174, pp. 607 - 615 (2018) - DOI: 10.1016/j.solmat.2017.10.002
A. Riverola, A. Mellor, D. Alonso Alvarez, L. Ferre Llin, I. Guarracino, C.N. Markides, D.J. Paul, D. Chemisana, N. Ekins-Daukes

"Mid Infrared Nonlinear Plasmonics using Germanium Nanoantennas on Silicon Substrates" arXiv 1802.04152 - Web: https://arxiv.org/pdf/1802.04152.pdf
M.P. Fischer, A. Riede, K. Gallacher, J. Frigerio, G. Pellegrini, M. Ortolani, D.J. Paul, G. Isella, A. Leitenstorfer, P. Biagioni, D. Brida,

"Quantum Interference in Silicon 1D Quasi-Ballistic Junctionless Nanowire Field Effect Transistors" arXiv: 1802.07013 - Web: https://arxiv.org/pdf/1802.07013.pdf
F.J. Schupp, M.M. Mirza, D.A. MacLaren, G.A.D. Briggs, D.J. Paul, J.A. Mol,

"Narrow Linewidth 780 nm Distributed Feedback Lasers for Cold Atom Quantum Technology" SPIE Solid State Lasers XXVII:Technology and Devices, Paper 10511-80 (2018) - Web: https://spie.org/PW18L/conferencedetails/solid-state-lasers?SSO=1
A. Saeed, Y. Ding, G. Ternent, B. Casey, C.J. Hamilton, N. Hempler, G.P.A. Malcolm, G.T. Maker, M. Sorel and D.J. Paul

"Germanium on silicon single-photon avalanche detectors using silicon-on-insulator substrates " SPIE Integrated Optics: Devices, Materials, and Technologies XXII 10535, 105351F (2018) - DOI: 10.1117/12.2290403
E.A. Ghisetti, D. Dumas, J. Kirdoda, K. Gallacher, R.W. Millar, M.M. Mirza and D.J. Paul,

"Specially designed solar cells for hybrid photovoltaic-thermal generators" 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC) pp. 1 - 4 (2018) - DOI: 10.1109/PVSC.2017.8366699
A. Mellor, I. Guarracino, L. Ferre Llin, D. Alonso-Alvarez, A. Riverola, S. Thoms, D.J. Paul, C.N. Markides, D. Chemisana, S. Maier and N. Ekins-Daukes

"Components for Integrated Ge on Si for Mid-Infrared Photonic Sensors" IEEE Photonics Society Summer Topical Meeting Series 2018 pp. 177 - 178 (2018) - DOI: 10.1109/PHOSST.2018.8456761
K. Gallacher, R.W. Millar, U. Griškevičiūtė, M.P. Fischer, A. Riede, J. Frigerio, L. Baldassarre, G. Pellegrini, A. Leitenstorfer, D. Brida, G. Isella, M. Ortolani, P. Biagioni and D.J. Paul

"Distributed Feedback Lasers Operating at 780 nm Wavelength Integrated on Si Substrates for Chip-scale Atomic Systems" 2018 IEEE 15th International Conference on Group IV Photonics pp. 177-178 (2018) - DOI: 10.1109/GROUP4.2018.8478720
K. Gallacher, R.W. Millar, D..J Paul, F. Mirando, G. Ternent, G. Mills and B. Casey

"Ge-on-Si Mid-Infrared Waveguides Operating up to 11 μm Wavelength" 2018 IEEE 15th International Conference on Group IV Photonics pp. 137-138 (2018) - DOI: 10.1109/GROUP4.2018.8478757
R.W. Millar, K. Gallacher, U. Griškevičiūtė, D.J. Paul, L Baldassarre, M Ortolani

"A Portable MEMS Gravimeter for the Detection of the Earth Tides" In: In: 2018 IEEE Sensors, New Delhi, India, 28-31 Oct 2018, ISBN 9781538647073 (2018) DOI: 10.1109/ICSENS.2018.8589884
A. Prasad, S.G. Bramsiepe, R.P. Middlemiss, J. Hough, S. Rowan, G.D. Hammond and D.J. Paul

2017

"Mid-infrared light emission > 3 μm wavelength from tensile strained GeSn microdisks" Optics Express 25(21), pp. 25374 - 25385 (2017) - DOI: 10.1364/OE.25.025374
R.W. Millar, D.C.S. Dumas, K.F. Gallacher, P. Jahandar, C. MacGregor, M. Myronov and D.J. Paul

"One dimensional transport in silicon nanowire junction-less field effect transistors" Scientific Reports 7(1), 3004 (2017) - DOI: 10.1038/s41598-017-03138-5
M.M. Mirza, F.J. Schupp, J.A. Mol, D.A. MacLaren, G.A.D. Briggs and D.J. Paul

"Field Tests of a Portable MEMS Gravimeter" Sensors 17(11), pp. 2571_1 - 12 (2017) - DOI: 10.3390/s17112571
R.P. Middlemiss, S.G. Bramsiepe, R.A. Douglas, J. Hough, D.J. Paul, S. Rowan, G.D. Hammond

"A High Stability Optical Shadow Sensor with Applications for Precision Accelerometers" arXiv preprint arXiv:1711.01253 (2017) - Web: https://arxiv.org/abs/1711.01253
S.G. Bramsiepe, D. Loomes, R.P. Middlemiss, D.J. Paul, G.D. Hammond

"ITO and AZO films for low emissivity coatings in hybrid photovoltaic-thermal applications" Solar Energy 155 pp. 82 - 92 (2017) - DOI: 10.1016/j.solener.2017.06.033
D. Alonso-Alvarez, L. Ferre Llin, A. Mellor, D.J. Paul and N.J. Ekins-Daukes

"Experimental and simulation study of 1D silicon nanowire transistors using heavily doped channels" IEEE Transactions on Nanotechnology 16, pp. 727 - 735 (2017)- DOI: 10.1109/TNANO.2017.2665691
V.P. Georgiev, M.M. Mirza, A.-I. Dochioiu, F.-A. Lema, S.M. Amoroso, E. Towie, C. Riddet, D.A. MacLaren, A. Asenov and D.J. Paul

"Chlorine-enabled electron doping in solution-synthesised SnSe thermoelectric nanomaterials" Advanced Energy Materials 7, 1602328 (2017) - DOI: 10.1002/aenm.201602328
G. Han, S.R. Popuri, H.F. Greer, L.F. Llin, J.-W.G. Bos, W. Zhou, D.J. Paul, H. Ménard, A.R. Knox, A.a Montecucco, J. Siviter, E.A. Man, W.-g. Li, M.C. Paul, M. Gao, T. Sweet, R. Freer, F. Azough, H. Baig, T.K. Mallick, D.H. Gregory

"Optical properties of highly n-doped germanium obtained by in-situ doping and laser annealing" Journal of Physics D: Applied Physics 50(46), 465103 (2017) - DOI: 10.1088/1361-6463/aa8eca
J. Frigerio, A. Ballabio, K. Gallacher, V. Gilberti, L. Baldassarre, R. Millar, R. Milazzo, L. Maiolo, A. Minotti, F. Bottegoni, P. Biagioni, D.J. Paul, M. Ortolani, A. Pecora, E. Napolitani and G. Isella

"Energy Challenges for ICT" ICT-Energy Concepts for Energy Efficiency and Sustainability, INTECH (2017) - DOI: 10.5772/66678
G. Fagas, J.P. Gallagher, L. Gammaitoni, D.J. Paul

"Thermoelectrics, Photovoltaics and Thermal Photovoltaics for Powering ICT Devices and Systems" ICT-Energy Concepts for Energy Efficiency and Sustainability, INTECH (2017) - DOI: 10.5772/65983
L.F. Llin and D.J. Paul

"Comparative Study of Annealed and High Temperature Grown ITO and AZO Films for Solar Energy Applications" MRS Advances 2017 pp. 1-6 - DOI: https://doi.org/10.1557/adv.2017.448
D. Alonso-Alvarez, L. Ferre Llin, A. Mellor, D.J. Paul and N.J. Ekins-Daukes

"GaAs-based distributed feedback laser at 780 nm for 87Rb cold atom quantum technology" 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (2017) - DOI: 10.1109/CLEOE-EQEC.2017.8086371
Y. Ding, G. Ternent, A. Saeed, C.J. Hamilton, N. Hempler, G.P.A. Malcolm, G.T. Maker, M. Sorel and D.J. Paul

"Mid-Infrared Third-Harmonic Emission from Heavily-Doped Germanium Plasmonic Nanoantennas" Conference on Lasers and Electro-Optics, OSA Technical Digest 2017, paper FF1G.2 - DOI: https://doi.org/10.1364/CLEO_QELS.2017.FF1G.2
M.P. Fischer, A. Riede, A. Grupp, K. Gallacher, J. Frigerio, G. Pellegrini, M. Ortolani, D. J. Paul, G. Isella, A. Leitenstorfer, P. Biagioni, and D. Brida

"Silicon Transistors in Reduced Dimensions" American Physical Society (APS) March Meeting, New Orleans, LA, USA, 13-17 Mar (2017) http://meetings.aps.org/Meeting/MAR17/Session/S1.1
F. Schupp, M.M. Mirza, D.A. MacLaren, G.A. Briggs, D.J. Paul, and J. Mol

"Integrated germanium-on-silicon waveguides for mid-infrared photonic sensing chips" IEEE 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) (2017) - DOI: 10.1109/IRMMW-THz.2017.8067105
K. Gallacher, A. Sorgi, V. Giliberti, J. Frigerio, G. Isella, P. Biagioni, D.J. Paul, M. Ortolani and L. Baldassarre

"Tensile strained GeSn mid-infrared light emitters" 2017 IEEE 14th International Conference on Group IV Photonics (GFP) (2017) - DOI: 10.1109/GROUP4.2017.8082190
R.W. Millar, D.C.S. Dumas, K. Gallacher, P. Jahandar, M. Myronov and D.J. Paul

"Mid-infrared n-Ge on Si plasmonic based microbolometer sensors" 2017 IEEE 14th International Conference on Group IV Photonics (GFP) (2017) - DOI: 10.1109/GROUP4.2017.8082167
K. Gallacher, R.W. Millar, V. Giliberti, E. Calandrini, L. Baldassarre, J. Frigerio, A. Ballabio, E. Sakat, G. Pellegrini, G. Isella, M. Ortolani, P. Biagioni and D.J. Paul

"Heavily-doped germanium on silicon with activated doping exceeding 1020 cm−3 as an alternative to gold for mid-infrared plasmonics" 2017 IEEE 14th International Conference on Group IV Photonics (GFP) (2017) - DOI: 10.1109/GROUP4.2017.8082170
J. Frigerio, A. Ballabio, G. Pellegrini, K. Gallacher, V. Giliberti, L. Baldassarre, R. Milazzo, K. Huet, F. Mazzamuto, P. Biagioni, D.J. Paul, M. Ortolani, E. Napolitani and G. Isella

"Germanium-on-silicon waveguides for mid-infrared photonic sensing chips" 2017 IEEE 14th International Conference on Group IV Photonics (GFP) (2017) - DOI: 10.1109/GROUP4.2017.8082197
K. Gallacher, L. Baldassarre, R.W. Millar, A. Sorgi, V. Giliberti, J. Frigerio, G. Isella, I. Figliolia, P. Biagioni, M. Ortolani and D.J. Paul

"n-Ge on Si for mid-infrared plasmonic sensors" 2017 IEEE Photonics Society Summer Topical Meeting Series (SUM) (2017) - DOI: 10.1109/PHOSST.2017.8012682
D.J. Paul, K. Gallacher, R.W. Millar, V. Giliberti, E. Calandrini, L. Baldassarre, M.P. Fischer, J. Frigerio, A. Ballabio, E. Sakat, G. Pellegrini, D. Brida, G. Isella, M. Ortolani and P. Biagioni

"Variability study of high current junctionless silicon nanowire transistors" 2017 IEEE 12th Nanotechnology Materials and Devices Conference (NMDC) pp. 87 - 88 (2017) - DOI: 10.1109/NMDC.2017.8350514
V.P. Georgiev, A.-I. Dochioiu, F.-A. Lema, S. Berada, M.M. Mirza, D.J. Paul and A. Asenov

2016

"Measurement of the Earth tides with a MEMS gravimeter" Nature 531, Issue 7596, pp. 614 - 629 (2016) - DOI: 10.1038/nature17397
R.P. Middlemiss, A. Samarelli, D.J. Paul, J. Hough, S. Rowan and G. D. Hammond

"Optical Activation of Germanium Plasmonic Nanoantennas in the Mid Infrared" Physical Review Letters 117, 047401 (2016) - DOI: 10.1103/PhysRevLett.117.047401
M.P. Fischer, C. Schmidt, E. Sakat, J. Stock, A. Samarelli, J. Frigerio, M. Ortolani, D.J. Paul, G. Isella, A. Leitenstorfer, P. Biagioni, and D. Brida

"Tunability of the dielectric function of heavily doped germanium thin films for mid-infrared plasmonics" Physical Review B 94, 085202 (2016) - DOI: 10.1103/PhysRevB.94.085202
J. Frigerio, A. Ballabio, G. Isella, E. Sakat, P. Biagioni, M. Bollani, E. Napolitani, C. Manganelli, M. Virgilio, A. Grupp, M.P. Fischer, D. Brida, K. Gallacher, D.J. Paul, L. Baldassarre, P. Calvani, V. Giliberti, A. Nucara and M. Ortolani

"Disentangling nonradiative recombination processes in Ge micro-crystals on Si substrates" Applied Physics Letters 108 262103 (2016) - DOI: 10.1063/1.4955020
F. Pezzoli, A. Giorgioni, K. Gallacher, F. Isa, P. Biagioni, R.W. Millar, E. Gatti, E. Grilli, E. Bonera, G. Isella, D.J. Paul and L. Miglio

"Mid-infrared intersubband absorption from p-Ge quantum wells grown on Si substrates" Applied Physics Letters 108, 091114 (2016) - DOI: 10.1063/1.4943145
K. Gallacher, A. Ballabio, R. W. Millar, J. Frigerio, A. Bashir, I. Maclaren, G. Isella, M. Ortolani, and D.J. Paul

"Analysis of Ge micro-cavities with in-plane tensile strains above 2%" Optics Express 24(5), pp. 4365 - 4374 (2016) - DOI: 10.1364/OE.24.004365
R.W. Millar, K. Gallacher, J. Frigerio, A. Ballabio, A. Bashir, I. MacLaren, G. Isella and D. J. Paul

"Facile Surfactant‐Free Synthesis of p‐type SnSe Nanoplates with Exceptional Thermoelectric Power Factors" Angewandte Chemie 128(22), pp. 6543 - 6547 (2016) - DOI: 10.1002/ange.201601420
G. Han, S.R. Popuri, H.F. Greer, J.‐W.G. Bos, W. Zhou, A.R. Knox, A. Montecucco, J. Siviter, E.A. Man, M. Macauley, D.J. Paul, W. Li, M.C. Paul, M. Gao, T. Sweet, R. Freer, F. Azough, H. Baig, N. Sellami, T.K. Mallick, D.H. Gregory

"8-band k.p modelling of mid-infrared intersubband absorption in Ge quantum wells" Journal of Applied Physics 120, 043103 (2016) - DOI: 10.1063/1.4959259
D.J. Paul

"Measurement of acceleration" Patent WO2016030435 A1 - Google patents: WO2016030435 A1
P. Campsie, G.D. Hammond, R.P. Middlemiss, D.J. Paul and A. Samarelli

"EC Strategic Research Agenda on Sustainable ICT" EC Energy Network Technical Report (2016) - DOI: 10.13140/RG.2.2.14761.98406
Editor D.J. Paul

"Optical Activation of Germanium Plasmonic Nanoantennas in the Mid Infrared" arXiv preprint arXiv: 1603.06339
M.P. Fischer, C. Schmidt, E. Sakat, J. Stock, A. Samarelli, J. Frigerio, M. Ortolani, D.J. Paul, G. Isella, A. Leitenstorfer, P. Biagioni, and D. Brida

"Disentangling nonradiative recombination processes in Ge micro-crystals on Si substrates" arXiv preprint arXiv:1603.08700
F. Pezzoli, A. Giorgioni, K. Gallacher, F. Isa, P. Biagioni, R.W. Millar, E. Gatti, E. Grilli, E. Bonera, G. Isella, D.J. Paul, and L. Miglio

"Tunability and Losses of Mid-infrared Plasmonics in Heavily Doped Germanium Thin Films": arXiv preprint arXiv:1601.05321
J. Frigerio, A. Ballabio, G. Isella, E. Sakat, P. Biagioni, M. Bollani, E. Napolitani, C. Manganelli, M. Virgilio, A. Grupp, M.P. Fischer, D. Brida, K. Gallacher, D.J. Paul, L. Baldassarre, P. Calvani, V. Giliberti, A. Nucara and M. Ortolani

"Thermoelectric cross-plane properties on p- and n-Ge/Si_xGe_1-x superlattices" Thin Solid Films 602, pp. 90 - 94 (2016) - DOI: 10.1016/j.tsf.2015.09.059
L. Ferre Llin, A. Samarelli, S. Cecchi, D. Chrastina, G. Isella, E. Müller Gubler, T. Etzelstorfer, J. Stangl and D.J. Paul

"Expanding the Ge emission wavelength to 2.25 μm with Si_xN_y strain engineering" Thin Solid Films 602, pp. 60 - 63 (2016) - DOI: 10.1016/j.tsf.2015.07.017
R.W. Millar, K. Gallacher, A. Samarelli, J. Frigerio, D. Chrastina, T. Dieing, G. Isella and D.J. Paul

"Fabrication of mid-infrared plasmonic antennas based on heavily doped germanium thin films" Thin Solid Films 602, pp. 52 - 55 (2016) - DOI: 10.1016/j.tsf.2015.10.005
A. Samarelli, J. Frigerio, E. Sakat, L. Baldassarre, K. Gallacher, M. Finazzi, G. Isella, M. Ortolani, P. Biagioni and D.J. Paul

"A novel absorptive/reflective solar concentrator for heat and electricity generation: An optical and thermal analysis" Energy Conversion and Management 114, pp. 142-153 - DOI: 10.1016/j.enconman.2016.02.011
X. Meng, N. Sellami, A.R. Knox, A. Montecucco, J. Siviter, P. Mullen, A. Ashraf, A. Samarelli, L. Ferre Llin, D.J. Paul, W. Li, M.C. Paul, D.H. Gregory, G. Han, M. Gao, T. Sweet, R. Freer, F. Azough, R. Lowndes, X. Xia, T.K. Mallick

"Ge-on-Si Photonics for Mid-infrared Sensing Applications" MRS Advances 2016 (2016) - DOI: 10.1557/adv.2016.391
K. Gallacher, L. Baldassarre, A. Samarelli, R. W. Millar, A. Ballabio, J. Frigerio, G. Isella, A. Bashir, I. MacLaren, V. Giliberti, G. Pellegrinia, P. Biagioni, M. Ortolani and D. J. Paul

"Engineering Large In-Plane Tensile Strains in Ge Microdisks, Microrings and Racetrack Optical Cavities" ECS Transactions 75(8), pp. 633 - 640 (2016) - DOI: 10.1149/07508.0633ecst
R.W. Millar, K. Gallacher, J. Frigerio, A. Ballabio, A. Bashir, I. MacLaren, G. Isella and D. J. Paul

"Mid-Infrared Sensing Using Heavily Doped Germanium Plasmonics on Silicon Substrates" ECS Transactions 75(8), pp. 247 - 251 (2016) - DOI: 10.1149/07508.0247ecst
L. Baldassarre, E. Sakat, J. Frigerio, A. Samarelli, V. Giliberti, G. Pellegrini, K. Gallacher, M. Fischer, D. Brida, G. Isella, P. Biagioni, D.J. Paul and M. Ortolani

"The Use of Silicon-Germanium Superlattices in Thermoelectric Devices and Microfabricated Generators" ECS Transactions 75(8), pp469 - 478 (2016) - DOI: 10.1149/07508.0469ecst
L. Ferre Llin, F. Mirando, A. Samarelli, A. Odia, S. Cecchi, T. Etzelstorfer, E. Müller Gubler, D. Chrastina, G. Isella, J. Stangl, J.M.R. Weaver, P. Dobson and D.J. Paul

"Mid-Infrared Intersubband Absorption from p-Ge Quantum Wells Grown on Si Substrates" ECS Transactions 75(8), pp. 253 - 256 (2016) - DOI: 10.1149/07508.0253ecst
K. Gallacher, A. Ballabio, R.W. Millar, J. Frigerio, A. Bashir, I. MacLaren, G. Isella, M. Ortolani and D.J. Paul

"Ba_6−3xNd_8+2xTi₁₈O₅₄ Tungsten Bronze: A New High-Temperature n-Type Oxide Thermoelectric" Journal of Electronic Materials 45(3), pp. 1894 - 1899 (2016) - DOI: 10.1007/s11664-015-4275-6
F. Azough, R. Freer, S.R. Yeandel, J.D. Baran, M. Molinari, S.C. Parker, E. Guilmeau, D. Kepaptsoglou, Q. Ramasse, A. Knox, D. Gregory, D.J. Paul, M. Paul, A. Montecucco, J. Siviter, P. Mullen, W. Li, G. Han, E.A. Man, H. Baig, Tapas Mallick, N. Sellami, G. Min and T. Sweet

"Scalable Solar Thermoelectrics and Photovoltaics (SUNTRAP)" AIP Conference Proceedings 1766, 080007 (2016) - DOI: 10.1063/1.4962105
T.K.N. Sweet, M. Rolley, G. Min, A. Knox, D. Gregory, D.J. Paul, M. Paul, A. Montecucco, J. Siviter, P. Mullen, A. Ashraf, W. Li, T. Mallick, N. Sellami, H. Baig, X.-l. Meng, R. Freer, F. Azough and E.F. Fernández

"Intersubband absorption in p-Ge QWs on Si" 2016 IEEE 13th International Conference on Group IV Photonics (GFP) 13, pp. 30 - 31 (2016) - DOI: 10.1109/GROUP4.2016.7739130
K. Gallacher, A. Ballabio, R. W. Millar, J. Frigerio, A. Bashir, I. MacLaren, G. Isella, M. Ortolani and D. J. Paul

"The UK National Quantum Technologies Hub in sensors and metrology (Keynote Paper)" Proceedings SPIE 9900, 990009 (2016) - DOI: 10.1117/12.2232143
K. Bongs et al.,

"Nano-and Micro-fabrication Techniques for Improving Thermoelectric Materials and Generators" Thermoelectric Materials and Devices 17, pp. 83 - 108 (1996) in "Thermoelectric Materials and Devices (Energy Environment Series)" edited by Iris Nandhakumar, Neil M. White, Stephen Beeby, Royal Society of Chemistry (2016) - ISBN: 978-1-78262-323-6
D.J. Paul

"Specially designed solar cells for hybrid photovoltaic-thermal generators" IEEE 43rd Photovoltaic Specialists Conference (PVSC) 43 pp. 2960 - 2963 (2016) - DOI: 10.1109/PVSC.2016.7750203
A. Mellor, I. Guarracino, L. Ferre Llin, D. Alonso-Alvarez, A. Riverola, S. Thoms, D.J. Paul, C.N. Markides, D. Chemisana, S. Maier and N. Ekins-Daukes

"Germanium plasmonic nanoantennas for third-harmonic generation in the mid infrared" 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) 41, pp. 1 - 2 - DOI: 10.1109/IRMMW-THz.2016.7758692
M. P. Fischer, A. Riede, A. Grupp, K. Gallacher, J. Frigerio, M. Ortolani, D. J. Paul, G. Isella, A. Leitenstorfer, P. Biagioni and D. Brida

"Benchmarking the use of heavily-doped Ge against noble metals for plasmonics and sensing in the mid-infrared"41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) 41, pp. 1 - 2 - DOI: 10.1109/IRMMW-THz.2016.7758628
G. Pellegrini, L. Baldassarre, V. Giliberti, J. Frigerio, K. Gallacher, D. J. Paul, G. Isella, M. Ortolani and P. Biagioni

"Mid-infrared plasmonic platform based on n-doped Ge-on-Si: Molecular sensing with germanium nano-antennas on Si" 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) 41, pp. 1 - 2 - DOI: 10.1109/IRMMW-THz.2016.7758725
L. Baldassarre, E. Sakat, M. Bollani, A. Samarelli, K. Gallacher, J. Frigerio, G. Pellegrini, V. Giliberti, A. Ballabio, M. P. Fischer, D. Brida, G. Isella, D. J. Paul, M. Ortolani and P. Biagioni

"Mid-infrared intersubband absorption from p-Ge quantum wells on Si" 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) 41, pp. 1 - 2 - DOI: 10.1109/IRMMW-THz.2016.7758421
K. Gallacher, R. W. Millar, A. Ballabio, J. Frigerio, A. Bashir, I. MacLaren, G. Isella, M. Ortolani and D. J. Paul,

"Experimental and simulation study of a high current 1D silicon nanowire transistor using heavily doped channels" 2016 IEEE Nanotechnology Materials and Devices Conference (NMDC) 11, pp. 1-3 - DOI: 10.1109/NMDC.2016.7777084
V. P. Georgiev, M. M. Mirza, A. I. Dochioiu, F. A. Lema, S. M. Amoroso, E. Towie, C. Riddet, D. A. MacLaren, A. Asenov and D. J. Paul

2015

"Mid-infrared plasmon-enhanced spectroscopy with germanium antennas on silicon substrates" Nano Letters 15(11), pp. 7225 - 7231 (2015) - DOI: 10.1021/acs.nanolett.5b03247
L. Baldassarre, E. Sakat, J. Frigerio, A. Samarelli, K. Gallacher, E. Calandrini, G. Isella, D.J. Paul, M. Ortolani, P. Biagioni

"Extending the emission wavelength of Ge nanopillars to 2.25 μm using silicon nitride stressors" Optics Express 23(14), pp. 18193 - 18202 (2015) DOI: 10.1364/OE.23.018193
R.W. Millar, K. Gallacher, A. Samarelli, J. Frigerio, D. Chrastina, G. Isella, T. Dieing and D.J. Paul

"Group-IV midinfrared plasmonics" Journal of Nanophotonics 9(1), 093789 (2015) - DOI: 10.1117/1.JNP.9.093789
P. Biagioni, J. Frigerio, A. Samarelli, K. Gallacher, L. Baldassarre, E. Sakat, E. Calandrini, R.W. Millar, V. Giliberti, G. Isella, D.J. Paul and M. Ortolani

"Multiphysics Simulations of a Thermoelectric Generator" Energy Procedia 75, pp. 633 - 638 (2015) - DOI: 10.1016/j.egypro.2015.07.473
W. Li, M.C. Paul, A. Montecucco, A.R. Knox, J. Siviter, N. Sellami, X.-L. Meng, E. Fernandez, T.K. Mallick, P. Mullen, A. Ashraf, A. Samarelli, L. Ferre Llin and D.J. Paul, D.H. Gregory, M. Gao, T. Sweet, F. Azough, R. Lowndes and R. Freer

"Coupled Simulation of Performance of a Crossed Compound Parabolic Concentrator with Solar Cell" Energy Procedia 75, pp. 325 - 330 (2015) - DOI: 10.1016/j.egypro.2015.07.371
W. Li, M.C. Paul, N. Sellami, X.-L. Meng, T.K. Mallick, E. Fernandez, A.R. Knox, A. Montecucco, J. Siviter, P. Mullen, A. Ashraf, A. Samarelli, L. Ferre Llin and D.J. Paul, D.H. Gregory, M. Gao, T. Sweet, F. Azough, R. Lowndes and R. Freer

"Finite Element Modelling To Evaluate the Cross-plane Thermal conductivity and Seebeck Coefficient of Ge/SiGe Heterostructure" Materials Today: Proceedings 2(2) pp. 510 - 518 (2015) - DOI: 10.1016/j.matpr.2015.05.070
A. Odia, L. Ferre Llin, A. Samarelli and D.J. Paul

"Optical Switching of Mid-Infrared Plasmonic Nanoantennas Based on Germanium" CLEO QELS 2015, FW3E.2 (2015) - DOI: 10.1364/CLEO_QELS.2015.FW3E.2
M.P. Fischer, C. Schmidt, J. Stock, E. Sakat, A. Samarelli, J. Frigerio, P. Biagioni, D.J. Paul, G. Isella, A. Leitenstorfer, and D. Brida

"Optical Activation of Plasmonic Germanium Nanoantennas Resonant in the Mid-Infrared" 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference 2015, EH_5_5 (2015) - DOI: OSA web pages
M.P. Fischer, C. Schmidt, J. Stock, E. Sakat, A. Samarelli, J. Frigerio, P. Biagioni, D.J. Paul, G. Isella, A. Leitenstorfer, and D. Brida

"Mid-infrared plasmonic resonances exploiting heavily-doped Ge on Si" Proceedings SPIE 9357, 93570G (2015) - DOI: 10.1117/12.2084500
P. Biagioni, E. Sakat, L. Baldassarre, E. Calandrini, A. Samarelli, K. Gallacher, J. Frigerio, G. Isella, D. J. Paul and M. Ortolani

"Mid-infrared intersubband absorption in p- Ge/SiGe quantum wells grown on Si" Proceedings IEEE Group IV Photonics 2015, pp. 15 - 16 (2015) - DOI: 10.1109/Group4.2015.7305931
K. Gallacher, A. Ballabio, R.W. Millar, A. Samarelli, J. Frigerio, D. Chrastina, G. Isella, L. Baldassarre, M. Ortolani, E. Sakat, P. Biagioni and D.J. Paul

"Highly strained Ge on Si microdisks with silicon nitride stressors" Proceedings IEEE Group IV Photonics 2015, pp. 65 - 66 (2015) - DOI: 10.1109/Group4.2015.7305948
R.W. Millar, K. Gallacher, J. Frigerio, D. Chrastina, G. Isella and D.J. Paul

"Heavly phosphorous-doped germanium thin films for mid-infrared plasmonics" Proceedings IEEE Group IV Photonics 2015 pp. 94 - 95 (2015) - DOI: 10.1109/Group4.2015.7305964
J. Frigerio, L. Baldassarre, E. Sakat, A. Samarelli, K. Gallacher, M. Fischer, D. Brida, D.J. Paul, G.Isella, P. Biagioni and M. Ortolani

2014

"Design and fabrication of memory devices based on nanoscale polyoxometalate clusters" Nature 515, Issue 7528, pp. 545 - 549 (2014) - DOI: 10.1038/nature13951
C. Busche, L. Vila-Nadal, J. Yan, H.N. Miras, De-L. Long, V.P. Georgiev, A. Asenov, R.H. Pedersen, N. Gadegaard, M.M. Mirza, D.J. Paul, J.M. Poblet and L. Cronin

"Determining the electronic performance limitations in top-down fabricated Si nanowires with mean widths down to 4 nm" Nano Letters 14(11), pp. 6056 - 6060 (2014) - DOI: 10.1021/nl5015298
M.M. Mirza, D.A. MacLaren, A. Samarelli, B.M. Holmes, H. Zhou, S. Thoms, D. MacIntyre and D.J. Paul

"Ge/SiGe quantum confined Stark effect electro-absorption modulation with low voltage swing at λ = 1550 nm" Optics Express 22(16), pp. 19284 - 19292 (2014) - DOI: 10.1364/OE.22.019284
D.C.S. Dumas, K. Gallacher, S. Rhead, M. Myronov, D.R. Leadley and D.J. Paul

"Silver antimony Ohmic contacts to moderately-doped n-type germanium" Applied Physics Letters 104, 162101 (2014) - DOI: 10.1063/1.4873127
D.C.S. Dumas, K. Gallacher, R.Millar, I. MacLaren, M. Myronov, D.R. Leadley and D.J. Paul

"Thin SiGe virtual substrates for Ge heterostructures integration on silicon" Journal of Applied Physics 115, 093502 (2014) - DOI: 10.1063/1.4867368
S.C. Cecchi, E. Gatti, D. Chrastina, J. Figerio, E. Müller Gubler, D.J. Paul, M. Guzzi and G. Isella

"Multilayered Ge/SiGe Material in Microfabricated Thermoelectric Modules" Journal of Electronic Materials 43(10), pp. 3838 - 3843 - DOI: 10.1007/s11664-014-3233-z
A. Samarelli, L. Ferre Llin, S. Cecchi, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl, E. Müller Gubler, J.M.R. Weaver, P. Dobson, D.J. Paul

"Prospects for SiGe thermoelectric generators" Solid State Electronics, 98, pp. 70 - 74 (2014) DOI: 10.1016/j.sse.2014.04.003
A. Samarelli, L. Ferre Llin, Y. Zhang, J.M.R. Weaver, P.S. Dobson, S. Cecchi, J. Frigerio, F. Isa, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl, E. Müller Gubler and D.J. Paul

"The Thermoelectric Properties of Ge/SiGe Based Superlattices: from Materials to Energy Harvesting Modules" ECS Transactions, 64, pp. 929 - 937 (2014) DOI: 10.1149/06406.0929ecst
A. Samarelli, L. Ferre Llin, S. Cecchi, J. Frigerio, T. Etzelstorfer, E. Müller Gubler, J. Stangl, D. Chrastina, G. Isella and D.J. Paul

"Beyond Moore's law" Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372(2012), pp. 20130376 (2014) - DOI: 10.1098/rsta.2013.0376
D.R.S. Cumming, S.B. Furber and D.J. Paul

"A research agenda towards zero-power ICT" Intech Open Access from "ICT - Energy - Concepts Towards Zero - Power Information and Communication Technology " (2014) - DOI: 10.5772/57092
G. Abadal Berini, G. Fagas, L. Gammaitoni and D.J. Paul

"Thermoelectric Energy Harvesting" Intech Open Access from "ICT - Energy - Concepts Towards Zero - Power Information and Communication Technology " (2014) - DOI: 10.5772/57347
D.J. Paul

"Quantum Cascade Lasers" in "Physics and Applications of Terahertz Radiation" Edited by M. Perenzoni and D.J. Paul, Springer Series in Optical Sciences 173, pp. 103 - 121 (2014) DOI: 10.1007/978-94-007-3837-9_4

M. Perenzoni and D.J. Paul (Editors), "Physics and Applications of Terahertz Radiation" Springer Series in Optical Sciences 173 - Web: http://link.springer.com/book/10.1007/978-94-007-3837-9, ISBN: 978-94-007-3836-2
D.J. Paul

"Ge/SiGe quantum confined Stark effect modulators with low voltage swing at λ = 1550 nm" Proceedings of the IEEE Group IV Photonics, Paris, August (2014) - DOI: 10.1109/Group4.2014.6961946
D.C.S. Dumas, K. Gallacher, S. Rhead, M. Myronov, D.R. Leadley and D.J. Paul

"Process induced tensile strain of Ge on Si nanopillars by ICP-PECVD SiN stressor layers" Proceedings of the IEEE Group IV Photonics, Paris, August (2014) - DOI: 10.1109/Group4.2014.6961941
R.W. Millar, K. Gallacher, A. Samarelli, D.C.S. Dumas, M. Myronov, D.R. Leadley and D.J. Paul

"Mid-infrared Plasmonic Germanium Antennas on Silicon" Proceedings of the IEEE Group IV Photonics, Paris, August (2014) - DOI: 10.1109/Group4.2014.6962011
J. Frigerio, M. Ortolani, L. Baldassarre, E. Calandrini, A. Samarelli, K. Gallacher, E. Sakat, M. Finazzi, D.J. Paul, P. Biagioni and G. Isella

"Mid-infrared plasmonic germanium antennas integrated on a silicon substrate" Proceedings of Near-Field Optics, Nanophotonics and Related Techniques, Salt Lake City, USA (2014)
E. Sakat, M. Ortolani, L. Baldassarre, E. Calandrini, A. Samarelli, K. Gallacher, J. Frigerio, M. Finazzi, G. Isella, D. J. Paul, and P. Biagioni

"Mid-Infrared plasmonic platform based on heavily doped epitaxial Ge-on-Si: retrieving the optical constants of thin Ge epilayers" 39^th Proceedings of the International Conference on Infrared, Millimeter, and Terahertz Waves, Tucson, USA pp. 1-3 (2014) (Invited paper) DOI: 10.1109/IRMMW-THz.2014.6956438
L. Baldassarre, E. Calandrini, A. Samarelli, K. Gallacher, D.J. Paul, J. Frigerio, G. Isella, E. Sakat, M. Finazzi, P. Biagioni and M. Ortolani

2013

"The cross-plane thermoelectric properties of p-Ge/Si_0.5Ge_0.5 superlattices" Applied Physics Letters 103, 143507 (2013) - DOI: 10.1063/1.4824100
L. Ferre Llin, A. Samarelli, S. Cecchi, T. Etzelstorfer, E. Müller Gubler, D. Chrastina, G. Isella, J. Stangl, J. M. R. Weaver, P. S. Dobson, and D. J. Paul

"Ge-on-Si Single-Photon Avalanche Diode Detectors: Design, Modeling, Fabrication, and Characterization at Wavelengths 1310 and 1550 nm" IEEE Transactions on Electron Devices 60, pp 3807-3813 (2013) - DOI: 10.1109/TED.2013.2282712
R.E. Warburton, G. Intermite, M. Myronov, P. Allred, D.R. Leadley, K. Gallacher, D.J. Paul, N.J. Pilgrim, L.J.M.Lever, Z. Ikonic, R.W. Kelsall, E. Huante-Ceron, A.P. Knights and G.S. Buller

"The thermoelectric properties of Ge/SiGe modulation doped superlattices" Journal of Applied Physics 113, 233704 (2013) - DOI: 10.1063/1.4811228
A. Samarelli, L. Ferre Llin, S. Cecchi, J. Frigerio, T. Etzelstorfer, E. Müller, Y. Zhang, J. R. Watling, D. Chrastina, G. Isella, J. Stangl, J. P. Hague, J. M. R. Weaver, P. Dobson, and D. J. Paul

"Ge/SiGe superlattices for nanostructured thermoelectric modules" Thin Solid Films 543, 153 (2013) - DOI: 10.1016/j.tsf.2013.01.002
D. Chrastina, S. Cecchi, J. P. Hague, J. Frigerio, A. Samarelli, L. Ferre-Llin, D.J. Paul, E. Müller, T. Etzelstorfer, J. Stangl and G. Isella

"Thermal Conductivity Measurement Methods for SiGe Thermoelectric Materials" Journal of Electronic Materials 42(7), pp 2376 - 2380 (2013) - DOI: 10.1007/s11664-013-2505-3-z
L. Ferre Llin, A. Samarelli, Y. Zhang, J. M. R. Weaver, P. Dobson, S. Cecchi, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl, E. Müller and D.J. Paul

"Power Factor Characterization of Ge/SiGe Thermoelectric Superlattices at 300 K" Journal of Electronic Materials 42(7), pp 1449 - 1453 (2013) - DOI: 10.1007/s11664-012-2287-z
A. Samarelli, L. Ferre Llin, Y. Zhang, J. M. R. Weaver, P. Dobson, S. Cecchi, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl, E. Müller and D.J. Paul

"Ge/SiGe Superlattices for Thermoelectric Devices Grown by Low-Energy Plasma-Enhanced Chemical Vapor Deposition" Journal of Electronic Materials 42(7) pp. 2829 - 2835 (2013) - DOI: 10.1007/s11664-013-2511-5
S. Cecchi, T. Etzelstorfer, E. Müller, A. Samarelli, L. Ferre Llin, D. Chrastina, G. Isella, J. Stangl, J. M. R. Weaver, P. Dobson and D. J. Paul

"Ge/SiGe superlattices for thermoelectric energy conversion devices" Journal of Materials Science 48(7), pp. 2829-2835 (2013) - DOI: 10.1007/s10853-012-6825-0
S.C. Cecchi, T. Etzelstorfer, E. Müller, D. Chrastina, G. Isella, J. Stangl, A. Samarelli, L. Ferre Llin and D.J. Paul

"(Invited) Germanium/Silicon Heterostructures for Terahertz Emission" ECS Transactions 50, pp. 763 - 771 DOI: 10.1149/05009.0763ecst
R.W. Kelsall, V. Dinh, P. Ivanov, S. Valavanis, L.J.M. Lever, Z. Ikonic, P. Velha, D.C. Dumas, K.F. Gallacher, D.J. Paul, J. Halpin, M. Myrnov, Maksym D.R. Leadley

"Si/SiGe Thermoelectric Generators" ECS Transactions 50, pp. 959 - 963 - DOI: <10.1149/05009.0959ecst
D.J. Paul, A. Samarelli, L. Ferre Llin, Y. Zhang, J.M.R. Weaver, P.S. Dobson, S. Cecchi, J. Frigerio, F. Isa, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl and E. Müller Gubler

"Si/SiGe Tunneling Static Random Access Memories" ECS Transactions 50, pp. 987 - 990 - DOI: 10.1149/05009.0987ecst
G. Ternent and D.J. Paul

"Direct Band-gap Electroluminescence from Strained n-Ge Light Emitting Diodes" ECS Transactions 50, pp. 305 - 308 - DOI: 10.1149/05009.0305ecst
P. Velha, K.F. Gallacher, D.C. Dumas, D.J. Paul, M. Myronov and D.R. Leadley

"Long Wavelength &ge 1.9 µm Germanium for Optoelectronics Using Process Induced Strain" ECS Transactions 50, pp. 779 - 782 - DOI: 10.1149/05009.0779ecst
P. Velha, K.F. Gallacher, D.C. Dumas, D.J. Paul, M. Myronov and D.R. Leadley

"Mid-infrared plasmonic antennas made of electron-doped epitaxial germanium-on-silicon" 39^th Proceedings of the 2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013, pp. 1-2 - DOI: 10.1109/IRMMW-THz.2013.6665614
M. Ortolani, L. Baldassarre, A. Nucara, A. Samarelli, D.J. Paul, J. Frigerio, G. Isella, M. Finazzi and P. Biagioni

"Prospects for SiGe thermoelectric generators" 14th International Conference on Ultimate Integration on Silicon (ULIS) 2013 pp. 5 - 8 (2013) - DOI: 10.1109/ULIS.2013.6523478
D.J. Paul, A. Samarelli, L. Ferre Llin, Y. Zhang, J.M.R. Weaver, P.S. Dobson, S. Cecchi, J. Frigerio, F. Isa, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl and E. Müller Gubler,

"Design and performance of a prototype mesa-geometry Ge-on-Si single-photon avalanche diode detector at 1310 nm and 1550 nm wavelengths" Proceedings of 2013 IEEE 10^th International Conference onGroup IV Photonics (GFP), 2013 pp. 132 - 133 (2013) pp142 - 144 (2013) - DOI: 10.1109/Group4.2013.6644406
G. Intermite, R.E. Warburton, M. Myronov, Phil Allred, D.R. Leadley, K. Gallagher, D.J. Paul, N.J. Pilgrim, L.J.M. Lever, Z. Ikonic, R.W. Kelsall, and G.S. Buller,

"Strained germanium nanostructures on silicon emitting at λ >2.2 µm wavelength" Proceedings of 2013 IEEE 10^th International Conference onGroup IV Photonics (GFP) 2013 - DOI: 10.1109/Group4.2013.6644411
P. Velha, D.C. Dumas, K. Gallacher, R. Millar, M. Myronov, D.R. Leadley and D.J. Paul,

"SiGe Microfabricated Thermoelectric Generators" Nanoenergy Letters 6 (2014)
D.J. Paul, A. Samarelli, L. Ferre Llin, S. Cecchi, J. Frigerio, D Chrastina, G. Isella, T. Etzelstorfer, J. Stangl, E. Müller Gubler, Y. Zhang, J.M.R. Weaver and P.S. Dobson,

2012

"1.55 μm direct bandgap electroluminescence from strained n-Ge quantum wells grown on Si substrates" Applied Physics Letters 101, 211101 (2012) doi 10.1063/1.4767138
K. Gallacher, P. Velha, D.J. Paul, S. Cecchi, J. Figerio, D. Chrastina and G. Isella

"SPICE modelling of the scaling of resonant tunnelling diodes and the effects of sidewall leakage" IEEE Transactions on Electron Devices 59(12), 3555 (2012) doi 10.1109/TED.2012.2219867
G. Ternent and D.J. Paul

"Ohmic contacts to n-type germanium with low specific contact resistivity" Applied Physics Letters 100, 022113 (2012) doi: 10.1063/1.3676667
K. Gallacher, P. Velha, D.J. Paul, I. MacLaren, M. Myranov and D.R. Leadley

"Nanofabrication of high aspect ratio (~50:1) sub-10 nm silicon nanowires using plasma etch technologies" Journal of Vacuum Science and Technology B 30(6), 06FF02-1 (2012) DOI: 10.1116/1.4755835
M. Mirza, H. Zhou, X. Li, P. Velha, K. Docherty, A. Samarelli, G. Ternent and D.J. Paul

"Ge on Si Photonics Platform for Photonic Integrated Circuits (Invited)" Proceedings of the European Optical Society (Accepted for Publication 2012)
D.J. Paul, M. Sorel, P. Velha, M. Strain, K. Gallacher, A. Samarelli and D. Dumas

"Si/SiGe Thermoelectric Generators (Invited)" Electrochemical Society Transactions 50(9), pp.959-963 (2012)
D.J. Paul, A. Samarelli, L. Ferre Llin, Y. Zhang, J.M.R. Weaver, P.S. Dobson, S. Cecchi, J. Frigerio, F. Isa, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl and E. Müller Gubler

"Long Wavelength >1.9 μm Germanium for Optoelectronics Using Process Induced Strain" Electrochemical Society Transactions 50(9), pp.779-782 (2012)
P. Velha, D.J. Paul, M. Myronov and D.R. Leadley

"Germanium/Silicon Heterostructures for Terahertz Emission" Electrochemical Society Transactions 50(9), pp.763-771 (2012)
R. Kelsall, V. Dinh, P. Ivanov, A. Valavanis, L. Lever, Z. Ikonic, P. Velha, D. Dumas, K. Gallacher, D.J. Paul, J. Halpin, M. Myrnov, and D. Leadley

"Si/SiGe Tunneling Static Random Access Memories" Electrochemical Society Transactions 50(9), pp.987-990 (2012)
G. Ternent and D.J. Paul

"Low Specific Ohmic Contacts to n-type Germanium Using a Low Temperature NiGe Process" Electrochemical Society Transactions 50(9), pp.1081-1084 (2012)
K. Gallacher, P. Velha, D.J. Paul, I. MacLaren, M. Myronov and D.R. Leadley

"Direct Band-Gap Electroluminescence from Strained n-Ge Light Emitting Diodes" Electrochemical Society Transactions 50(9), pp.305-308 (2012)
P. Velha, K. Gallacher, D. Dumas, D.J. Paul, M. Myronov and D.R. Leadley

"1.55 μm Electroluminescence from Strained n-Ge Quantum Wells on Silicon Substrates" Proceedings of the IEEE Group IV Photonics, San Diego, USA, FB6, pp. 337-339 (2012) DOI: 10.1109/GROUP4.2012.6324093
K. Gallacher, P. Velha, D.J. Paul, S. Cecchi, J. Frigerio, D. Chrastina and G. Isella

" Tuning the Electroluminescence of n-Ge LEDs using Process Induced Strain" Proceedings of the IEEE Group IV Photonics, San Diego, USA, WP3, pp.81-83 (2012) DOI: 10.1109/GROUP4.2012.6324179
P. Velha, K. Gallacher, D. Dumas, D.J. Paul, M. Myronov and D.R. Leadley

"Si/SiGe Nanoscale Engineered Thermoelectric Materials for Energy Harvesting" Proceedings of the IEEE International Conference on Nanotechnology 2012, ThP1T3, 7913 (2012) doi 10.1109/NANO.2012.6322044
D.J. Paul, A. Samarelli, L. Ferre Llin, Y. Zhang, J.M.R. Weaver, P.S. Dobson, S. Cecchi, J. Frigerio, F. Isa, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl and E. Müller Gubler

"Silicon Nanowire Devices with Widths Below 5 nm" Proceedings of the IEEE International Conference on Nanotechnology 2012, WeA2T1, 7822 (2012) DOI: 10.1109/NANO.2012.6322005
M. M. Mirza, P.Velha, G. Ternent, H. P. Zhou, K. E. Docherty and D. J. Paul

"Scaling Resonant Tunneling Diodes and Nanowires using SPICE Modeling to Optimise Nanoscale Device Performance" Proceedings of the IEEE International Conference on Nanotechnology 2012, ThA2T6, 7921 (2012) DOI: 10.1109/NANO.2012.6322050
G. Ternent, M.M. Mirza and D.J. Paul

"Si/SiGe Heteroepitaxial materials for Thermoelectric Applications" Proceedings of the 31^st International and 10^th European Conference on Thermoelectrics (Accepted for publication 2012)
A. Samarelli, L. Ferre Llin, D.J. Paul, Y. Zhang, J.M.R. Weaver, P.S. Dobson, S. Cecchi, J. Frigerio, F. Isa, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl and E. Müller Gubler

"Accurate Measurements of Thermal Conductivity of SiGe Thermoelectric Materials" Proceedings of the 31^st International and 10^th European Conference on Thermoelectrics (Accepted for publication 2012)
A. Samarelli, L. Ferre Llin, D.J. Paul, Y. Zhang, J.M.R. Weaver, P.S. Dobson, S. Cecchi, J. Frigerio, F. Isa, D. Chrastina, G. Isella, T. Etzelstorfer, J. Stangl and E. Müller Gubler

"Synthesis and property measurement of nanoscale bismuth telluride thermoelectric materials" Proceedings of the 31^st International and 10^th European Conference on Thermoelectrics (Accepted for publication 2012)
J.B. Gallagher, A. Knox, D.J. Paul and D.H. Gregory

"Thermoelectric Energy Harvesting" 2^nd Thomas-Young Centre Energy Materials Workshop And Tutorial (June 2012)
D.J. Paul

"Nanofabrication of high aspect ratio (~50:1) sub-10 nm silicon nanowires using plasma etch technologies" EIPBN, Hawaii, USA, (May 2012)
M. Mirza, H. Zhou, X. Li, P. Velha, K. Docherty, A. Samarelli, G. Ternent and D.J. Paul

"High aspect ratio (~25:1) sub-10 nm HSQ lines using electron beam lithography" EIPBN, Hawaii, USA, (May 2012)
M.M. Mirza, H.P. Zhou, K.E. Docherty, S. Thoms, D.S. MacIntyre and D.J. Paul

"Process-induced strain bandgap reduction in germanium nanostructures" CLEO: Science and Innovations (CLEO: S and I) San Jose, California, USA, May 6, 2012 Low-dimensional Photonic Structures (CTh3D) DOI: Link
P. Velha, M. Myranov, D.R. Leadley and D.J. Paul

"Direct band-gap electroluminescence from strained n-doped germanium diode"CLEO: Science and Innovations (CLEO: S and I) San Jose, California, USA, May 6, (2012), Novel Light-emitting Materials (CW1L) DOI: link
P. Velha, K. Gallacher, D.C. Dumas, M. Myronov, D.R. Leadley and D.J. Paul

2011

"A study of the impact of dislocations on the thermoelectric propoerties of quantum wells in the Si/SiGe materials system" Journal of Applied Physics 110, 114508 (2011) - doi:10.1063/1.3665127
J.R. Watling and D.J. Paul

"Sub-50 nm GaAs/AlAs and Si/SiGe Self-Aligned Resonant Tunnelling Diodes (Invited)" UK Semiconductor Conference, Sheffield, July (2011)
G. Ternent, D.J. Paul, C.N. Ironside, K. Seuranine, D. MacLaren, M.J. Kelly, D. Zuo, D.R. Leadley and M. Myronov

2010

"Si/SiGe quantum cascade superlattice designs for terahertz emission" Journal of Applied Physics 107, 053109 (2010) - doi:10.1063/1.3319653 Article pdf
G. Matmon, D.J. Paul, L. Lever, Z. Ikonic, M. Califano, R.W. Kelsall, D. Chrastina, G. Isella, H. von Känel, E. Müller and A. Neels

"The progress towards terahertz quantum cascade lasers on silicon substrates" Laser and Photonics Reviews 4(5), 610 (2010) - doi:10.1002/lpor.200910038
D.J. Paul

"Si/SiGe Heterostructures in Nanoelectronics" Chapter in the Oxford Handbook of Nanoscience and Technology, Oxford University Press (March 2010)
D.J. Paul

2009

"Silicon photonics: A bright future?" Electronics Letters 45(12), pp582-584 (2009) - doi:10.1049/el.2009.1271
D.J. Paul

"Silicon photonics: A bright future?" Electronics Letters Special Supplement, pp14-16 June (2009)
D.J. Paul

2008

"Si/SiGe terahertz bound-to-continuum quantum cascade emitters" ECS Transactions 16(10), pp865-874 (2008) - doi:10.1149/1.2986846
D.J. Paul, G. Matmon, L. Lever, Z. Ikonic, R.W. Kelsall, D. Chrastina, G. Isella, H. von Känel, E. Müller and A. Neels

"Variation in the hopping exponent in disordered silicon MOSFETs" Journal of Physics: Condensed Matter 20(41), 415226 (2008) - doi:10.1088/0953-8984/20/41/415226
T. Ferrus, R. George, C.H.W. Barnes, N. Lumpkin, D.J. Paul and M. Pepper

"The use of terahertz time-domain spectroscopy to extract complex refractive index of metal films" Journal of Applied Physics 104, 053110 (2008) - doi:10.1063/1.2970161
D. Zhou, A. Zeitler, E. Parrott and D.J. Paul

"Si/SiGe bound-to-continuum quantum cascade emitters" Proceedings of the SPIE 6996, 69961C (2008) - Article PDF
D.J. Paul, G. Matmon, L. Lever, Z. Ikonic, R.W. Kelsall, D. Chrastina, G. Isella and H. von Känel

"Silicon as a model ion trap: time domain measurements of donor Rydberg states" Proceedings of the National Academy of Sciences 105(31), pp10649-10653 (2008) - doi:10.1073/pnas.0802721105
N. Q. Vinh, P. T. Greenland, K. Litvinenko, B. Redlich, A. F. G. van der Meer, S. A. Lynch, M. Warner, A. M. Stoneham, G. Aeppli, D. J. Paul, C. R. Pidgeon and B. N. Murdin

"8-band k.p modelling of the quantum confined Stark effect in Ge quantum wells on Si substrates" Physical Review B 77, 155323 (2008) - doi: 10.1103/PhysRevB.77.155323
D.J. Paul

"Si/SiGe bound-to-continuum quantum cascade terahertz emitters" Proceedings SPIE 6996, 69961C1-8 (2008): Article pdf
D.J. Paul, G. Matmon, L. Lever, Z. Ikonić, R.W. Kelsall, D. Chrastina, G. Isella, H. von Känel

"Si/SiGe Bound-to-continuum Terahertz Quantum Cascade Emitters" Electrochemical Society Proceedings, Fall Meeting and SiGe Symposium (2008)
D.J. Paul, G. Matmon, L. Lever, Z. Ikonic, R.W. Kelsall, D. Chrastina, G. Isella, H. von Känel, E. Müller and A. Neels

"SiGe/Si Quantum Cascade Structures Deposited by Low-Energy Plasma-Enhanced CVD" Proceedings IEEE Group IV Photonics, pp. 29-31 (2008) - DOI: 10.1016/j.tsf.2008.08.091
M. Zhao, A. Karim, G.V. Hansson, W.X. Ni, P. Townsend, S.A. Lynch and D.J. Paul

"Structural and Compositional Properties of Strain-Symmetrized SiGe/Si Heterostructures" Microscopy of Semiconducting Materials 2007, Springer Netherlands, pp. 269-272 (2008) - DOI: 10.1007/978-1-4020-8615-1_59
I.M. Ross, M. Gass, T. Walther, A. Bleloch, A.G. Cullis, L. Lever, Z. Ikonic, M. Califano, R.W. Kelsall, J. Zhang and D.J. Paul

2007

"Activation mechanisms in sodium-doped silicon MOSFETs" Journal of Physics: Condensed Matter 19, 226216 (2007) - doi: 10.1088/0953-8984/19/22/226216
T. Ferrus, R. George, C.H.W. Barnes, N. Lumpkin, D.J. Paul and M. Pepper

"Si/SiGe n-type resonant tunneling diodes fabricated using in-situ hydrogen cleaning" Applied Physics Letters 90, 203501 (2007) - doi:10.1063/1.2739089
Z. Suet, D.J. Paul, J. Zhang and S.G. Turner

"Interwell relaxation times in p-Si/SiGe asymmetric quantum well structures: the role of interface roughness" Physical Review B 75, 045338 (2007) - doi: 10.1103/PhysRevB.75.045338
M. Califano, N.Q.Vinh, P.J. Phillips, Z. Ikonic, R.W. Kelsall, P. Harrison, C.R. Pidgeon, B.N. Murdin, D.J. Paul, P. Townsend, J. Zhang, I.M. Ross and A.G. Cullis

"A Review Of Progress Towards Terahertz Si/SiGe Quantum Cascade Lasers" IETE Journal of Research (3), pp. 285-292 (2007) – DOI: article pdf
D.J. Paul, G. Matmon, P. Townsend, J. Zhang, M. Zhao and W.X. Ni

"Magnetoconductivity of Hubbard bands induced in silicon MOSFETs" Physica B: Condesed Matter 400(1-2), pp. 218-223 (2007) - DOI: 10.1016/j.physb.2007.07.011
T. Ferrus, R. George, C.H.W. Barnes, N. Lumpkin, D.J. Paul and M. Peppe

"Interface roughness scattering in p-Si/SiGe asymmetric quantum wells" Bulletin of the American Physical Society Vol. 52, Number 1, U43.7 (2007)
M. Califano, N.Q. Vinh, P.J. Phillips, Z. Ikonic, R.W. Kelsall, P. Harrison, C.R. Pidgeon, B.N. Murdin, D.J. Paul, P. Townsend, J. Zhang, I.M. Ross and A.G. Cullis

2006

"Low-loss surface-mode waveguides for terahertz Si/SiGe quantum cascade lasers" IEEE Journal of Quantum Electronics 42(12), pp1233-1238 (2006) - doi:10.1109/JQE.2006.883496
A. De Rossi, M. Carras and D.J. Paul

"Towards silicon-based lasers for terahertz sources" IEEE Journal of Selected Topics in Quantum Electronics 12(6), pp1570-1578 (2006) - doi:10.1109/JSTQE.2006.884069
S.A. Lynch, D.J. Paul, P. Townsend, G. Matmon, Z. Suet, R.W. Kelsall, Z. Ikonic, P. Harrison, J. Zhang, D.J. Norris, A.G. Cullis, C.R. Pidgeon, P. Murzyn, B.N. Murdin, M. Bain, H.S. Gamble, M. Zhao and W.-X. Ni

"Evidence for multiple impurity bands in sodium-doped silicon MOSFETs" Physical Review B 73, 041304 Rapid (2006) - doi: 10.1103/PhysRevB.73.041304
T. Ferrus, R. George, C.H.W. Barnes, N. Lumpkin, D.J. Paul and M. Pepper

"Low-temperature molecular beam epitaxy growth of Si/SiGe THz quantum cascade structures on virtual substrates" Thin Solid Films 508, pp24-28 (2006)
M. Zhao, W.X. Ni, P. Townsend, S.A. Lynch, D.J. Paul, C.C. Hsu and M.N. Chang

"Doubling speed using strained-Si/SiGe CMOS technology" Thin Solid Films 508, pp338-341 (2006)
S.H. Olsen, M. Temple, A.G. O'Neill, D.J. Paul, S. Chattopadhyay, K.S.K. Kwa and L.S. Driscoll

2005

"Pump-probe measurement of lifetime engineering in SiGe quantum wells below the optical phonon energy" Semiconductor Science and Technology 20, ppL50-L52 (2005) - doi:10.1088/0268-1242/20/10/L02
C.R. Pidgeon, P.J. Phillips, D. Carder, B.N. Murdin, T. Fromherz, D.J. Paul, W.-X. Ni and M. Zhao

"Intersubband lifetimes in p-Si/SiGe terahertz quantum cascade heterostructures" Physical Review B 71, 115326 (2005) - doi:10.1103/PhysRevB.71.115326
R.W. Kelsall, Z. Ikonic, C.R. Pidgeon, P.J. Philips, P. Harrison, S.A. Lynch, P. Townsend, D.J. Paul, S.L. Liew, D.J. Norris and A.G. Cullis

“Temperature dependence of terahertz optical transitions from boron and phosphorus dopant impurities in silicon” Applied Physics Letters 87, 101114 (2005) - doi:10.1063/1.2042544
S.A. Lynch, P. Townsend, G. Matmon, D.J. Paul, Z. Ikonic, R.W. Kelsall, P. Harrison, D.J. Norris, A.G. Cullis, and D.D. Arnone

"Effective electron mass in ultra-thin gate-oxide silicon MOSFET inversion layers" Semiconductor Science and Technology 20, pp664-667 (2005) - doi:10.1088/0268-1242/20/8/002
M. Dragosavac, D.J. Paul, M. Pepper, A.B. Fowler and D.A. Buchanan

"Investigation of the injection velocity of holes in strained-Si p-MOSFETs" Semiconductor Science and Technology 20, ppL20-L22 (2005) - doi: 10.1088/0268-1242/20/5/L02
G. Nicholas, T.J. Grasby, E.H.C. Parker, T.E. Whall, D.J. Paul, A.G.R. Evans and H. von Känel

"Silicon Quantum Integrated Circuits" Springer-Verlag, Berlin-Heidelberg (2005)
E. Kasper and D.J. Paul

"Towards a Si/SiGe quantum casacde laser for terahertz applications" Materials Research Society Symposium Proceedings 832, pp56-68 (2005)
D.J. Paul, S.A. Lynch, P. Townsend, Z. Ikonic, R.W. Kelsall, P. Harrison, S.L. Liew, D.J. Norris, A.G. Cullis, J. Zhang, M. Bain, H.S. Gamble, W.R. Tribe and D.D. Arnone

"Silicon quantum cascade lasers for THz sources" 2005 Ieee Leos Annual Meeting Conference Proceedings (LEOS) 18th Annual Meeting of the IEEE-Lasers-and-Electro-Optical-Society, Oct. 22-28, Sydney, Australia (2005)
S.A. Lynch, D.J. Paul, P. Townsend, G. Matmon, R.W. Kelsall, Z. Ikonic, P. Harrison, J. Zhang, D.J. Norris, A.G. Cullis, C.R. Pidgeon, P. Murzyn, B.N. Murdin, M. Bain and H.S. Gamble

"LO phonon scattering as a depopulation mechanism in Si/SiGe quantum cascades" 2nd IEEE International Conference On Group IV Photonics, Sept. 21-23, Antwerp, Belgium (2005)
P. Townsend , D.J. Paul, S.A. Lynch, R.W. Kelsall, Z. Ikonic, P. Harrison, D.J. Norris, A.G. Cullis, J. Zhang, X. Li, C.R. Pidgeon, B.N. Murdin and P. Murzyn

"Growth and characterization of strain-symmetried Si/SiGe THz quantum cascade structures" 2nd IEEE International Conference On Group IV Photonics, Sept. 21-23, Antwerp, Belgium (2005)
M. Zhao, W.X. Ni, P. Townsend, S.A. Lynch, D.J. Paul, C.C. Hsu and M.N. Chang

"Terahertz emission and absorption characteristics of silicon containing boron and phosphorous impurity dopants and the effect of temperature" 2nd IEEE International Conference On Group IV Photonics, Sept. 21-23, Antwerp, Belgium (2005)
G. Matmon, S.A. Lynch, P. Townsend, D.J. Paul, M. Bain, H.S. Gamble, J. Zhang, Z. Ikonic, R.W. Kelsall and P. Harrison

International School of Solid State Physics, 35th Workshop: Physics and Technology of THz Photonics, Erice, Italy, 20-26th July (2005)
D.J. Paul, P. Townsend, S.A. Lynch, R.W. Kelsall, Z. Ikonic, P. Harrison, D.J. Norris, S.L. Liew, A.G. Cullis, X. Li, J. Zhang, M. Bain, H.S. Gamble

2004

"Si/SiGe heterostructures: from material and physics to devices and circuits" Semiconductor Science and Technology 19, ppR75-R108 (2004) - doi:10.1088/0268-1242/19/10/R02
D.J. Paul

"Study of single and dual-channel designs for high performance strained-Si/SiGe n-MOSFETs" IEEE Transactions of Electron Devices, 51(7), pp1245-1253 (2004) - doi:10.1109/TED.2004.830652
S.H. Olsen, A.G. O'Neill, S. Chattopadhyay, L.S. Driscoll, K.S.K. Kwa, D.J. Norris, A.G. Cullis and D.J. Paul

"In search of a Si/SiGe terahertz quantum cascade laser" IEEE Topical Meeting on Silicon Monolithic Intergrated Circuits in RF Systems, Digest Of Papers : pp143-146, September (2004)
D.J. Paul, P. Townsend, S.A. Lynch, R.W. Kelsall, Z. Ikonic, P. Harrison, D.J. Norris, S.L. Liew, A.G. Cullis, X. Li, J. Zhang, M. Bain, H.S. Gamble, W.R. Tribe and D.D. Arnone

"Towards SiGe terahertz VCSELs" Materials Science Forum 453-454, pp1-8 (2004)
R.W. Kelsall, Z. Ikonic, P. Harrison, D.J. Paul, S.A. Lynch, R. Bates, D.J. Norris, S.L. Liew, A.G. Cullis, D.D. Arnone, D.J. Robbins and R.A. Soref

"Conductivity of weakly and strongly localised electrons in a n-type Si/SiGe heterostructure" Proceedings of the 10th Conference on Hopping and Related Phenomena 10, pp67-70 (2004)
I. Shlimak, V. Ginodman, M. Levin, M. Potemski, D.K. Maude, A. Gerber, A. Milner and D.J. Paul

2003

"Interwell intersubband electroluminescence from Si/SiGe quantum cascade emitters" Appl. Phys. Lett. 83(20), pp. 4092 - 4094 (2003) DOI: 10.1063/1.1626003
R. Bates, S. A. Lynch, D. J. Paul, Z. Ikonic, R. W. Kelsall, P. Harrison, S. L. Liew, D. J. Norris, A. G. Cullis, W. R. Tribe and D. D. Arnone

"High performance strained Si/SiGe nMOSFETs using a novel CMOS architecture" IEEE Transactions on Electron Devices 50(9), pp1961-1969 (2003) - doi:10.1109/TED.2003.815603
S. Olsen, L. Driscoll, K. Kwa, S. Chattopadhyay, A. O'Neill, A. Waite, Y. Tang, A. Evans, D.J. Norris, A.G. Cullis, D.J. Paul and D.J. Robbins

"Longitudinal conductivity in Si/SiGe heterostructures at integer filling factors" Physical Review B 68, Art. 075321_1-5 (2003) - doi: 10.1103/PhysRevB.68.075321
I. Shlimak, V. Ginodman, M. Levin, M. Potemski, D.K. Maude, K.-J. Friedland and D.J. Paul

"Analysis of terhertz emitting SiGe quantum cascade structures by transmission electron microscopy" Institute of Physics Conference Series 180, pp155-158 (2003)
S.L. Liew, D.J. Norris, A.G. Cullis, R.W. Kelsall, P. Harrison, Z. Ikonic, D.J. Paul, S.A. Lynch, R. Bates, D.D. Arnone and D.J. Robbins

"Advanced TEM analysis of strain-balanced Si/SiGe resonant tunnelling diodes structures" Institute of Physics Conference Series 180, pp163-168 (2003)
A.C.K. Chang, D.J. Norris, A.G. Cullis and D.J. Paul

"THz intersubband dynamics in p-Si/SiGe quantum well emitter structures" Physica Statui Solidi (b) 237, pp381-385 (2003)
C.R. Pidgeon, P. Murzyn, J.-P.R. Wells, Z. Ikonic, R.W. Kelsall, P. Harrison, S.A. Lynch, D.J. Paul, D.D. Arnone and D.J. Robbins

"Weak localisation and the 'destruction' of the two-dimensional metallic behaviour by a parallel magnetic field" Institute of Physics Conference Series 171, L1.5 (2003)
A. Lewalle, M. Pepper, C.J.B. Ford, D.J. Paul and G. Redmond

"Si/SiGe quantum cascade emitters for terahertz applications" Proc. 3rd International Conference on SiGe(C) Epitaxy and Heterostructures (2003)
D.J. Paul, S.A. Lynch, R. Bates, Z. Ikonic, R.W. Kelsall, P. Harrison, D.J. Norris, S.L. Liew, A.G. Cullis, C.R. Pidgeon, P. Murzyn, W. Tribe and D.D. Arnone

"High performance strained Si/SiGe nMOSFETs using a novel CMOS architecture" Proc. 3rd International Conference on SiGe(C) Epitaxy and Heterostructures (2003)
S. Olsen, L. Driscoll, K. Kwa, S. Chattopadhyay, A. O'Neill, A. Waite, Y. Tang, A. Evans, D.J. Norris, A.G. Cullis, D.J. Paul and D.J. Robbins

"Far intrared (THz) electroluminescence from Si/SiGe quantum cascade heterostructures" Proc. SPIE
S.A. Lynch, D.J. Paul, R. Bates, D.J. Norris, A.G. Cullis, Z. Ikonic, R.W. Kelsall, P. Harrison, D.D. Arnone and C.R. Pidgeon

2002

“The relative importance of electron-electron interactions compared to disorder in the two-dimensional 'metallic' state” Physical Review B 66, pp075324_1-5 (2002) - doi: 10.1103/PhysRevB.69.075316
A. Lewalle, M. Pepper, C.J.B. Ford, E.H. Hwang, S. Das Sarma, D.J. Paul and G. Redmond

“Intersubband electroluminescence from Si/SiGe cascade emitters at terahertz frequencies” Applied Physics Letters 81, pp1543-1545 (2002) - doi:10.1063/1.1501759
S.A. Lynch, R. Bates, D.J. Paul, D.J. Norris, A.G. Cullis, Z.Ikonic, R.W. Kelsall, P. Harrison, D.D. Arnone and C.R. Pidgeon

“Picosecond intersubband dynamics in p-Si/SiGe quantum well emitters” Applied Physics Letters 80, pp 1456-1458 (2002) - doi:10.1063/1.1452794
C.R. Pidgeon, P. Murzyn, J-P.R. Wells, I.V. Bradley, Z. Ikonic, R.W. Kelsall, P. Harrison, S.A. Lynch, D.J. Paul, D.D. Arnone, D.J. Robbins, D.J. Norris and A.G. Cullis

"Terahertz intersubband emission from silicon-germanium quantum cascades" Proc. IEEE Tenth International Conference on Terahertz Electronics pp9-12 (2002)
R.W. Kelsall, Z. Ikonic, P. Harrison, S.A. Lynch, R. Bates, D.J. Paul, D.J. Norris, S.L. Liew, A.G. Cullis, D.J. Robbins, P. Murzyn, C.R. Pidgeon and D.D. Arnone

"Localisation and Metal-Insulator Transitions in 2D" Proc. High Magnetic Field Conference, Oxford, August 2002
M. Pepper, A. Lewalle, A.R. Hamilton, M.Y. Simmons, C.J.B. Ford, D.J. Paul and D.A. Ritchie

"Si/SiGe quantum cascade emitters for terahertz applications" Proc. International Conference of the Physics of Semiconductors, July / August 2002
D.J. Paul, S.A. Lynch, R. Bates, Z. Ikonic, R.W. Kelsall, P. Harrison, C.R. Pidgeon,P. Murzyn, J.-P.R. Wells, I.V. Bradley, D.J. Norris, S.L. Liew, A.G. Cullis, W. Tribe and D.D. Arnone

"Electroluminescence from Si/SiGe quantum cascade emitters" Physica E 16, pp309-314 (2003)
D.J. Paul, S.A. Lynch, R. Bates, Z. Ikonic, R.W. Kelsall, P. Harrison, D.J. Norris, S.L. Liew, A.G. Cullis, P. Murzyn, C. Pidgeon, D.D. Arnone and D.J. Robbins

“Intersubband electroluminescence from Si/SiGe cascade emitters at terahertz frequencies” CLEO Technical Digest 2002, pp629-630 (2002) (Paper CFB2)
R. Bates, S.A. Lynch, D.J. Paul, D.J. Norris, A.G. Cullis, Z.Ikonic, R.W. Kelsall, P. Harrison, D.D. Arnone and C.R. Pidgeon

“Intersubband and impurity electroluminescence in Si/SiGe heterostructures at terahertz frequencies” CLEO Technical Digest 2002, p629 (2002) (Paper CFB1)
S.A. Lynch, D.J. Paul, R. Bates, P. Murzyn, C.R. Pidgeon, Z. Ikonic, R.W. Kelsall, P. Harrison, D.J. Norris, A.G. Cullis, and D.D. Arnone

"Si/SiGe quantum cascade emitters for terahertz applications" Physica E 16, pp147-155 (2003)
D.J. Paul, S.A. Lynch, R. Bates, Z.Ikonic, R.W. Kelsall, P. Harrison, D.J. Norris, S.L. Liew, A.G. Cullis, D.D. Arnone, C.R. Pidgeon, P. Murzyn, J.-P.R. Wells and I.V. Bradley

“Investigation of the zero field 2D 'metallic' state with rs and kFl controlled independently” Physica E 12, pp616-619 (2002)
A. Lewalle, M. Pepper, C.J.B. Ford, D.J. Paul, N. Griffin, B.P. Coonan, G. Redmond and G.M. Crean

“THz intersubband dynamics in p-Si/SiGe quantum well structures” Physica E 13, pp904-907 (2002)
C.R. Pidgeon, P. Murzyn, J-P.R. Wells, I.V. Bradley, Z. Ikonic, R.W. Kelsall, P. Harrison, S.A. Lynch, D.J. Paul, D.D. Arnone, D.J. Robbins, D.J. Norris and A.G. Cullis

“Si-based electroluminescence at THz frequencies” Material Science and Engineering B 89, pp 10-12 (2002)
S.A. Lynch, S.S. Dhillon, R. Bates, D.J. Paul, D.D. Arnone, D.J. Robbins, Z. Ikonic, R.W. Kelsall, P. Harrison, D.J. Norris, A.G. Cullis, C.R. Pidgeon, P. Murzyn and A.Loudon

“n-type Si/SiGe resonant tunnelling diodes” Material Science and Engineering B 89, pp 26-29 (2002)
D.J. Paul, P. See, B. Holländer, S. Mantl, I.V. Zozoulenko, K.F- Berggren, N. Griffin, B.P. Coonan, G. Redmond and G.M. Crean

“Low dimensional inverted Si/SiGe modulation-doped electron gases using selective ex-situ ion implantation” Material Science and Engineering B 89, pp111-115 (2002)
D.J. Paul, A. Ahmed, A.C. Churchill, D.J. Robbins and W.Y. Leong

2001

“Scaled performance of Si/SiGe resonant tunnelling diodes” IEEE Electron Device Letters 22(12), pp 582-584 (2001) - doi:10.1109/55.974584
P. See and D.J. Paul

“High dc performance Si/Si_1-xGe_x resonant tunelling diodes” IEEE Electron Device Letters 22(4), pp182-184 (2001) - doi:10.1109/55.915607
P. See, D.J. Paul, B. Holländer, S. Mantl, I.V. Zozoulenko and K.-F. Berggren

“Si/SiGe resonant tunnelling diodes with graded spacer wells” Applied Physics Letters 78(26), pp4184-4186 (2001) - doi:10.1063/1.1381042
D.J. Paul, P. See, I.V. Zozoulenko, K.-F. Berggren, B. Holländer, S. Mantl, N. Griffin, B.P. Coonan, G. Redmond and G.M. Crean

2000

"Technology Roadmap of European Nanoelectronics" European Commission (2000)
R. Compano, L. Molenkamp and D.J. Paul,

“Si/SiGe electron resonant tunnelling diodes” Applied Physics Letters 77(11), pp1653-1655 (2000) - doi:10.1063/1.1309020
D.J. Paul, P. See, I.V. Zozoulenko, K.-F. Berggren, B. Kabius, B. Holländer and S. Mantl

“Silicon germanium makes its mark” Physics World 13(2), pp27-32 (2000)
D.J. Paul

“Schottky gating high mobility Si/Si_1-xGe_x 2D electron systems” Thin Solid Films 369, pp316-139 (2000) - doi:10.1016/S0040-6090(00)00871-3
R.B. Dunford, N. Griffin, D.J. Paul, M. Pepper, D.J. Robbins, A.C. Churchill and W.Y. Leong

“Si/SiGe n-type inverted modulation-doping using ion implantation” Thin Solid Films 369, pp324-327 (2000) - doi:10.1016/S0040-6090(00)00873-7
A. Ahmed, R.B. Dunford, D.J. Paul, M. Pepper, A.C. Churchill, D.J. Robbins and W.Y. Leong

”Si/Si1-xGex heterostructure field effect transistors fabricated using a low thermal budget CMOS process” Microelectronic Engineering 53(1-4), pp209-212 (2000)
R.B. Dunford, D.J. Paul, M. Pepper, B.P. Coonan, N. Griffin, G. Redmond, G.M. Crean, B. Holländer and S. Mantl

“Inverted modulation-doped n-type Si/SiGe heterostructures” Microelectronic Engineering 53(1-4) pp205-208 (2000)
R.B. Dunford, A. Ahmed, D.J. Paul, M. Pepper, A.C. Churchill, D.J. Robbins and A.J. Pidduck

“Schottky gating high mobility Si/Si1-xGex 2D electron systems” Thin Solid Films 369, pp316-139 (2000)
R.B. Dunford, N. Griffin, D.J. Paul, M. Pepper, D.J. Robbins, A.C. Churchill and W.Y. Leong

“Si/SiGe n-type inverted modulation-doping using ion implantation” Thin Solid Films 369, pp324-327 (2000)
A. Ahmed, R.B. Dunford, D.J. Paul, M. Pepper, A.C. Churchill, D.J. Robbins and W.Y. Leong

“Investigations of Si/SiGe heterostructure material using non-destructive optical techniques” Thin Solid Films 364, pp75-79 (2000)
B.P. Coonan, N. Griffin, J.T. Beechinoor, M. Murtagh, G. Redmond, G.M. Crean, B. Holländer, S. Mantl, S. Bozzo, J.-L. Lazzari, F. Arnaud d.Avitaya, J. Derrien and D.J. Paul

1999

“Silicon germanium strianed layer materials in microelectronics” Advanced Materials 11(3), pp191-204 (1999) - doi:10.1002/(SICI)1521-4095(199903)11:3<191::AID-ADMA191>3.0.CO;2-3
D.J. Paul

“Silicon quantum integrated circuits” Proceedings of The Future of Microelectronics: Off the Beaten Path, pp183-192 Wiley (1999)
D.J. Paul, B. Coonan, G. Redmond, G.M. Crean, B. Holländer, S. Mantl, I. Zozoulenko, K.-F. Berggren, J.-L. Lazzari, F. Arnaud d’Avitaya and J. Derrien

“Silicon quantum integrated circuits:- An attempt to fabricate silicon-based quantum devices using CMOS fabrication techniques” Thin Solid Films 336, pp130-136 (1999)
D.J. Paul, B. Coonan, G. Redmond, B.J. O’Neill, G.M. Crean, B. Holländer, S. Mantl, I. Zozoulenko, K.-F. Berggren, J.-L. Lazzari, F. Arnaud d’Avitaya and J. Derrien

1998

“2D electron gas mobility as a function of virtual substrate quality in strained Si/SiGe heterojunctions” Journal of Vacuum Science and Technology B 16, pp1634-1638 (1998) - doi:10.1116/1.589952
A.C. Churchill, D.J. Robbins, D.J. Wallis, N. Griffin, D.J. Paul, A.J. Pidduck, W.Y. Leong and G.M. Williams

“Cyclotron resonance measurements of silicon/silicon-germanium two-dimensional electron gases with differing strain” Journal of Vacuum Science and Technology B 16(3), pp1655-1658 (1998) - doi:10.1116/1.589955
N. Griffin, D. D. Arnone, D. J. Paul, M. Pepper, D. J. Robbins, A. C. Churchill and J. M. Fernández

“Electrical properties and uniformity of two dimensional electron gases grown on cleaned SiGe virtual substrates” Journal of Vacuum Science and Technology B 16(3), pp1644-1647 (1998) - doi:10.1116/1.589953
D.J. Paul, A. Ahmed, M. Pepper, A.C. Churchill, D.J. Robbins and D J Wallis

“Far-infrared cyclotron resonance study of the effect of strain and localisation in Si/SiGe 2DEGs” Solid State Electronics 42(7-8), pp1159-1163 (1998) - doi:10.1016/S0038-1101(97)00321-3
N. Griffin, D.D. Arnone, D.J. Paul, M. Pepper, D.J. Robbins and A.C. Churchill

“Silicon germanium heterostructures in electronics:- The present and the future” Thin Solid Films 321, pp172-180 (1998) - doi:10.1016/S0040-6090(98)00469-6
D.J. Paul

“Electrical properties of two dimensional electron gases grown on cleaned SiGe virtual substrates” Thin Solid Films 321, pp181-185 (1998) - doi:10.1016/S0040-6090(98)00470-2
D.J. Paul, A. Ahmed, N. Griffin, M. Pepper, A.C. Churchill, D.J. Robbins and D J Wallis

“EBIC of strained Si/SiGe 2DEGs showing lateral electron confinement” Solid State Phenomena 63, pp25-32 (1998)
C. E. Norman, N. Griffin, D. D. Arnone, D. J. Paul, M. Pepper, B. Gallas and J. M. Fernández

“Dislocation-induced lateral depletion in a high mobility Si/SiGe two dimensional electron gas” Proc. ICPS (1998)
N. Griffin, D.D. Arnone, D.J. Paul, C.E. Norman, B. Gallas, J.M. Fernández, and M. Pepper

“Far-infrared cyclotron resonance study of the effect of strain and localisation in Si/SiGe 2DEGs” Solid State Electronics 42(7-8), pp1159-1163 (1998)
N. Griffin, D.D. Arnone, D.J. Paul, M. Pepper, D.J. Robbins and A.C. Churchill

1997

“High mobility two dimensional electron gases in Si/SiGe heterostructures on relaxed SiGe layers grown at high temperature” Semiconductor Science and Technology 12, pp943-945 (1997) - doi: 10.1088/0268-1242/12/8/002
A.C. Churchill, D.J. Robbins, D.J. Wallis, N. Griffin, D.J. Paul and A.J. Pidduck

“Investigation of electron-beam and optical induced damage in high mobility SiGe heterostructures” Solid State Electronics 41(10), pp1509-1513 (1997) - doi:10.1016/S0038-1101(97)00097-X
D.J. Paul, J.M. Ryan, P.V. Kelly, G.M. Crean, J. M. Fernández, M. Pepper, A.N. Broers and B.A. Joyce

“Gating high mobility silicon germanium heterostructures” Journal of Microelectronic Engineering 35, pp309-312 (1997)
N. Griffin, D.J. Paul, M. Pepper, S. Taylor, W. Eccleston, J.M. Fernández and B.A. Joyce

“Electron beam induced damage of silicon germanium” Journal of Microelectronic Engineering 35, pp59-62 (1997)
D.J. Paul, J.M. Ryan, M. Pepper, A.N. Broers, T.E. Whall, J.M. Fernández and B.A. Joyce

“Investigation of electron-beam and optical induced damage in high mobility SiGe heterostructures” Solid State Electronics 41(10), pp1509-1513 (1997)
D.J. Paul, J.M. Ryan, P.V. Kelly, G.M. Crean, J. M. Fernández, M. Pepper, A.N. Broers and B.A. Joyce

“Fabrication of SiGe quantum devices by electron-beam induced damage” Superlattices and Microstructures 21(1), pp29-36 (1997)
J.M. Ryan, D.J. Paul, M. Pepper, A.N. Broers, T.E. Whall, J.M. Fernández and B.A. Joyce

1996

“Electron beam induced damage of silicon germanium” Journal of Vacuum Science and Technology B 14(6), pp3834-3838 (1996) - doi:10.1116/1.588677
D.J. Paul, J.M. Ryan, M. Pepper, A.N. Broers, T.E. Whall, J.M. Fernández and B.A. Joyce

“Low temperature characterisation of modulation doped SiGe grown on bonded silicon-on insulator” Applied Physics Letters 69(18), pp2704-2706 (1996) - doi:10.1063/1.117684
D.J. Paul, N. Griffin, D.D. Arnone, M. Pepper, C.J. Emeleus, P.J. Phillips and T.E. Whall

1995

“Si_1-xGe_x pulsed plasma etching using CHF₃ and H₂” Journal of Vacuum Science and Technology B 13(6), pp2234-2237, (1995) - doi:10.1116/1.588055
D.J. Paul, V.J. Law and G.A.C. Jones

1994

“Co-tunnelling of holes in silicon based structures” Physical Review B 49(2), pp16514-16517 (1994) - doi: 10.1103/PhysRevB.49.16514
D.J. Paul, J.R.A. Cleaver, H. Ahmed and T.E. Whall

1993

“Coulomb blockade in silicon based structures at temperatures up to 50K” Applied Physics Letters 63(5), pp631-632 (1993) - doi:10.1063/1.109972
D.J. Paul, J.R.A. Cleaver, H. Ahmed and T.E. Whall

“High resolution scanning electron microscopy in mesoscopic physics” Institute of Physics Conference Series Number 134: Section 5, pp249-252 (1993)
D. Williams, E. Pettersen, D.J. Paul and H. Ahmed

“Fabrication of wires in silicon germanium material” Microelectronics Engineering 21, pp349-352 (1993)
D.J. Paul, J.R.A. Cleaver and H. Ahmed