CMOS-Compatible Memristor for Optoelectronic Neuromorphic Computing

Abstract Optoelectronic memristor is a promising candidate for future light-controllable high-density storage and neuromorphic computing. In this work, light-tunable resistive switching (RS) characteristics are demonstrated in the CMOS process-compatible ITO/HfO2/TiO2/ITO optoelectronic memristor. T...

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Main Authors: Facai Wu, Chien-Hung Chou, Tseung-Yuen Tseng
Format: Article
Language:English
Published: SpringerOpen 2022-11-01
Series:Nanoscale Research Letters
Online Access:https://doi.org/10.1186/s11671-022-03744-x
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author Facai Wu
Chien-Hung Chou
Tseung-Yuen Tseng
author_facet Facai Wu
Chien-Hung Chou
Tseung-Yuen Tseng
author_sort Facai Wu
collection DOAJ
description Abstract Optoelectronic memristor is a promising candidate for future light-controllable high-density storage and neuromorphic computing. In this work, light-tunable resistive switching (RS) characteristics are demonstrated in the CMOS process-compatible ITO/HfO2/TiO2/ITO optoelectronic memristor. The device shows an average of 79.24% transmittance under visible light. After electroforming, stable bipolar analog switching, data retention beyond 104 s, and endurance of 106 cycles are realized. An obvious current increase is observed under 405 nm wavelength light irradiation both in high and in low resistance states. The long-term potentiation of synaptic property can be achieved by both electrical and optical stimulation. Moreover, based on the optical potentiation and electrical depression of conductances, the simulated Hopfield neural network (HNN) is trained for learning the 10 × 10 pixels size image. The HNN can be successfully trained to recognize the input image with a training accuracy of 100% in 13 iterations. These results suggest that this optoelectronic memristor has a high potential for neuromorphic application.
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spelling doaj.art-43e85415ef374685a377bb098f1a1a162023-08-02T07:45:48ZengSpringerOpenNanoscale Research Letters1556-276X2022-11-011711910.1186/s11671-022-03744-xCMOS-Compatible Memristor for Optoelectronic Neuromorphic ComputingFacai Wu0Chien-Hung Chou1Tseung-Yuen Tseng2Institute of Electronics, National Yang Ming Chiao Tung UniversityInstitute of Electronics, National Yang Ming Chiao Tung UniversityInstitute of Electronics, National Yang Ming Chiao Tung UniversityAbstract Optoelectronic memristor is a promising candidate for future light-controllable high-density storage and neuromorphic computing. In this work, light-tunable resistive switching (RS) characteristics are demonstrated in the CMOS process-compatible ITO/HfO2/TiO2/ITO optoelectronic memristor. The device shows an average of 79.24% transmittance under visible light. After electroforming, stable bipolar analog switching, data retention beyond 104 s, and endurance of 106 cycles are realized. An obvious current increase is observed under 405 nm wavelength light irradiation both in high and in low resistance states. The long-term potentiation of synaptic property can be achieved by both electrical and optical stimulation. Moreover, based on the optical potentiation and electrical depression of conductances, the simulated Hopfield neural network (HNN) is trained for learning the 10 × 10 pixels size image. The HNN can be successfully trained to recognize the input image with a training accuracy of 100% in 13 iterations. These results suggest that this optoelectronic memristor has a high potential for neuromorphic application.https://doi.org/10.1186/s11671-022-03744-x
spellingShingle Facai Wu
Chien-Hung Chou
Tseung-Yuen Tseng
CMOS-Compatible Memristor for Optoelectronic Neuromorphic Computing
Nanoscale Research Letters
title CMOS-Compatible Memristor for Optoelectronic Neuromorphic Computing
title_full CMOS-Compatible Memristor for Optoelectronic Neuromorphic Computing
title_fullStr CMOS-Compatible Memristor for Optoelectronic Neuromorphic Computing
title_full_unstemmed CMOS-Compatible Memristor for Optoelectronic Neuromorphic Computing
title_short CMOS-Compatible Memristor for Optoelectronic Neuromorphic Computing
title_sort cmos compatible memristor for optoelectronic neuromorphic computing
url https://doi.org/10.1186/s11671-022-03744-x
work_keys_str_mv AT facaiwu cmoscompatiblememristorforoptoelectronicneuromorphiccomputing
AT chienhungchou cmoscompatiblememristorforoptoelectronicneuromorphiccomputing
AT tseungyuentseng cmoscompatiblememristorforoptoelectronicneuromorphiccomputing