Optoelectronic synaptic performance of NiO/ZnO bilayer based memristors

Yanan Li; Haolin Luo; Yangming Leng; Chunmei Li; Jinyong Wang; Wei Li

doi:10.1117/12.2652368

2 November 2022 Optoelectronic synaptic performance of NiO/ZnO bilayer based memristors

Yanan Li, Haolin Luo, Yangming Leng, Chunmei Li, Jinyong Wang, Wei Li

Proceedings Volume 12351, International Conference on Advanced Sensing and Smart Manufacturing (ASSM 2022); 123510T (2022) https://doi.org/10.1117/12.2652368
Event: International Conference on Advanced Sensing and Smart Manufacturing (ASSM 2022), 2022, Nanjing, China

Abstract

The visual nervous system is the main channel for perceiving the surrounding environment and obtaining external information. However, due to the von Neumann bottleneck, new computing architecture is urgently needed to meet the growing demands of big data processing. So, it is a new frontier in the field of computing to develop artificial neural networks comparable to biological neural networks. Synapses, which form the basis of neuromorphic computing, have attracted great interest in recent years. In this study, we synthesized ZnO nanorods by chemical method and introduced NiO as the second functional layer to modify the interface by taking advantage of ZnO's large specific surface area. We report the fabrication of the optoelectronic synaptic device based on NiO/ZnO bilayer films and demonstrate its diverse synaptic plasticity. The device could respond to light stimuli at the wavelength of 450 nm or 520 nm respectively, and present varied synaptic behaviors, such as short-term plasticity (STP), paired-pulse facilitation (PPF), long-term plasticity (LTP), and STP to LTP transition and “Learning behavior”. It is worth confirming that our optoelectronic synapse has simple ITO/NiO/ZnO/ITO structure but excellent synaptic behavior, which has a potential to be used in artificial vision and neuromorphic computing systems in the near future.

Citation Download Citation

Yanan Li, Haolin Luo, Yangming Leng, Chunmei Li, Jinyong Wang, and Wei Li "Optoelectronic synaptic performance of NiO/ZnO bilayer based memristors", Proc. SPIE 12351, International Conference on Advanced Sensing and Smart Manufacturing (ASSM 2022), 123510T (2 November 2022); https://doi.org/10.1117/12.2652368

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KEYWORDS

Optoelectronics

Optoelectronic devices

Zinc oxide

Nanorods

Pulsed laser operation

Synaptic plasticity

Visual system

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