Simulation and Design Optimization of Germanium-on-Silicon Single Photon Avalanche Diodes

Smith, C. et al. (2023) Simulation and Design Optimization of Germanium-on-Silicon Single Photon Avalanche Diodes. In: SPIE OPTO 2023, San Francisco, CA, USA, 28 Jan-3 Feb 2023, 124260S. ISBN 9781510659575 (doi: 10.1117/12.2650154)

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Single photon avalanche diodes (SPADs) are semiconductor photodiode detectors capable of detecting individual photons, typically with sub-ns precision timing. We have previously demonstrated novel pseudo-planar germanium-on-silicon SPADs with absorption into the short-wave infrared, which promise lower costs and potentially easier CMOS integration compared to III-V SPADs. Here we have simulated the dark count rate of these devices, using a custom solver for McIntyre’s avalanche model and a trap assisted tunnelling generation model. Calibration and fitting have been performed using experimental data and the results have highlighted areas in which the technology can be optimised.

Item Type:Conference Proceedings
Additional Information:Royal Academy of Engineering (RF-201819-18-187); Innovate UK (44835); Engineering and Physical Sciences Research Council (UK EPSRC; EP/S026428/1, EP/T001011/1, EP/T00097X/1).
Glasgow Author(s) Enlighten ID:Mirza, Dr Muhammad M A and McCarthy, Charlie and Mowbray, Hannah and Coughlan, Mr Conor and Millar, Dr Ross and Paul, Professor Douglas and Dumas, Dr Derek and Kirdoda, Mr Jaroslaw and Smith, Mr Charles
Authors: Smith, C., Kirdoda, J., Dumas, D., Coughlan, C., McCarthy, C., Mowbray, H., Mirza, M. M. A., Fleming, F., Yi, X., Saalbach, L., Buller, G., Paul, D., and Millar, R.
College/School:College of Science and Engineering > School of Engineering
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Copyright Holders:Copyright © 2023 SPIE
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
309639Single Photon Infrared Imaging, Detection and RangingDouglas PaulInnovate UK (INNOVATE)44835ENG - Electronics & Nanoscale Engineering
305753Quantum Communications hub Phase 2Robert HadfieldEngineering and Physical Sciences Research Council (EPSRC)EP/T001011/1ENG - Electronics & Nanoscale Engineering
305567QuantIC - The UK Quantum Technoogy Hub in Quantum Enhanced ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/T00097X/1P&S - Physics & Astronomy