Extremely low-power consumption nano-RTD photodetectors for future neuromorphic computing

Al-Taai, Q. R. A. , Al-Khalidi, A. , Wang, J., Romeira, B., Figueiredo, J. and Wasige, E. (2021) Extremely low-power consumption nano-RTD photodetectors for future neuromorphic computing. 44th Workshop on Compound Semiconductor Devices and Integrated Circuits held in Europe (WOCSDICE), Bristol, UK, 14-17 Jun 2021.

Abstract

This paper describes the fabrication of nanometre-sized resonant tunnelling diode (RTD) photodetector devices which may be used as excitable neuromorphic spike generators. Submicron diameter devices have been fabricated and exhibit peak currents under 250 A, peak and valley voltages of around 0.6 V and 0.8 V and a peak to valley current ratio of around 2.4. If operated as a spike generator from the valley voltage point, the expected energy consumption will be under 10 fJ per spike. This nanoRTD technology could underpin the development of energy efficient neuromorphic computing.

• Item Type: Conference or Workshop Item
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Wasige, Professor Edward and Al-Taai, Dr Qusay and Wang, Dr Jue and Al-Khalidi, Dr Abdullah
• Authors: Al-Taai, Q. R. A., Al-Khalidi, A., Wang, J., Romeira, B., Figueiredo, J., and Wasige, E.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Copyright Holders: Copyright © The Author(s) 2021
• Publisher Policy: Reproduced with the permission of the publisher

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
303977		ChipAI	Edward Wasige	European Commission (EC)	828841	ENG - Electronics & Nanoscale Engineering