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Wavelength dependent light tunable resistive switching graphene oxide nonvolatile memory devices

Jaafar, Ayoub H.; Kemp, N. T.


Ayoub H. Jaafar


This paper reports on the first optically tunable graphene oxide memristor device. Modulation of resistive switching memory by light opens the route to new optoelectronic devices that can be switched optically and read electronically. Applications include integrated circuits with memory elements switchable by light and optically reconfigurable and tunable synaptic circuits for neuromorphic computing and brain-inspired, artificial intelligence systems. In this report, planar and vertical structured optical resistive switching memristors based on graphene oxide are reported. The device is switchable by either optical or electronic means, or by a combination of both. In addition the devices exhibit a unique wavelength dependence that produces reversible and irreversible properties depending on whether the irradiation is long or short wavelength light, respectively. For long wavelength light, the reversible photoconductance effect permits short-term dynamic modulation of the resistive switching properties of the light, which has application as short-term memory in neuromorphic computing. In contrast, short wavelength light induces both the reversible photoconductance effect and an irreversible change in the memristance due to reduction of the graphene oxide. This has important application in the fabrication of cloned neural networks with factory defined weights, enabling the fast replication of artificial intelligent chips with pre-trained information.

Journal Article Type Article
Publication Date 2019-11
Journal Carbon
Print ISSN 0008-6223
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 153
Pages 81-88
APA6 Citation Jaafar, A. H., & Kemp, N. T. (2019). Wavelength dependent light tunable resistive switching graphene oxide nonvolatile memory devices. Carbon, 153, 81-88.
Keywords General Chemistry
Publisher URL
Additional Information ©2019, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license