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Analysis of stability of Nano- vs Micro-sized Resonant Tunnelling Diode (RTD) devices for future neuromorphic computing applications

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Main Authors: Qusay Raghib Ali Al-Taai, Wang, Jue, Razvan, Morariu, Afesomeh, Ofiare, Abdullah Al-Khalidi, Edward, Wasige
Other Authors: QusayRaghibAli.Al-taai@glasgow.ac.uk
Format: Article
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2022
Subjects:
InP/GaAs
Nano electronic devices
Nano fabrication
Neuromorphic
Resonant tunnelling diode
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74974
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spelling my.unimap-749742022-04-14T08:12:46Z Analysis of stability of Nano- vs Micro-sized Resonant Tunnelling Diode (RTD) devices for future neuromorphic computing applications Qusay Raghib Ali Al-Taai Wang, Jue Razvan, Morariu Afesomeh, Ofiare Abdullah Al-Khalidi Edward, Wasige QusayRaghibAli.Al-taai@glasgow.ac.uk InP/GaAs Nano electronic devices Nano fabrication Neuromorphic Resonant tunnelling diode Link to publisher's homepage at http://ijneam.unimap.edu.my In this paper, we report on the fabrication of micrometre and nanometre-sized resonant tunnelling diode (RTD) devices which may be used as excitable neuromorphic spike generators. The fabrication processes using photolithography were applied for micro-sized RTDs, while for nano-RTDs the fabrication was optimised to achieve accurate nano-sized mesas through a multi-exposure step based on e-beam lithography. The results show a large decrease in the peak currents from 41 mA to 27 A for micro- and nano-RTDs, respectively, peak and valley voltages of around 0.6 V and 0.8 V and a peak to valley current ratio of around 2.4. For the smallest fabricated RTD of 300 nm diameter, the expected energy consumption per oscillation cycle (if used in an oscillator) will be 1.55 fJ. DC characterisation of the devices show that the nano-RTDs are stable and have smooth current voltage (I-V) characteristics compared with micro-RTDs. The nano-RTD technology could be employed to realise highly sensitive photodetectors that can be operated as spike generators and so they could underpin the development of energy efficient neuromorphic computing. 2022-04-14T08:12:46Z 2022-04-14T08:12:46Z 2021-12 Article International Journal of Nanoelectronics and Materials, vol.14 (Special Issue), 2021, pages 149-155 1985-5761 (Printed) 1997-4434 (Online) http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74974 http://ijneam.unimap.edu.my en Universiti Malaysia Perlis (UniMAP)
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic InP/GaAs
Nano electronic devices
Nano fabrication
Neuromorphic
Resonant tunnelling diode
spellingShingle InP/GaAs
Nano electronic devices
Nano fabrication
Neuromorphic
Resonant tunnelling diode
Qusay Raghib Ali Al-Taai
Wang, Jue
Razvan, Morariu
Afesomeh, Ofiare
Abdullah Al-Khalidi
Edward, Wasige
Analysis of stability of Nano- vs Micro-sized Resonant Tunnelling Diode (RTD) devices for future neuromorphic computing applications
description Link to publisher's homepage at http://ijneam.unimap.edu.my
author2 QusayRaghibAli.Al-taai@glasgow.ac.uk
author_facet QusayRaghibAli.Al-taai@glasgow.ac.uk
Qusay Raghib Ali Al-Taai
Wang, Jue
Razvan, Morariu
Afesomeh, Ofiare
Abdullah Al-Khalidi
Edward, Wasige
format Article
author Qusay Raghib Ali Al-Taai
Wang, Jue
Razvan, Morariu
Afesomeh, Ofiare
Abdullah Al-Khalidi
Edward, Wasige
author_sort Qusay Raghib Ali Al-Taai
title Analysis of stability of Nano- vs Micro-sized Resonant Tunnelling Diode (RTD) devices for future neuromorphic computing applications
title_short Analysis of stability of Nano- vs Micro-sized Resonant Tunnelling Diode (RTD) devices for future neuromorphic computing applications
title_full Analysis of stability of Nano- vs Micro-sized Resonant Tunnelling Diode (RTD) devices for future neuromorphic computing applications
title_fullStr Analysis of stability of Nano- vs Micro-sized Resonant Tunnelling Diode (RTD) devices for future neuromorphic computing applications
title_full_unstemmed Analysis of stability of Nano- vs Micro-sized Resonant Tunnelling Diode (RTD) devices for future neuromorphic computing applications
title_sort analysis of stability of nano- vs micro-sized resonant tunnelling diode (rtd) devices for future neuromorphic computing applications
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2022
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/74974
_version_ 1738511685930450944
score 13.214268

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