Low-temperature solution-processed amorphous-Ga2O3 optoelectric synapses for neuromorphic computing

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-03-28 DOI:10.1016/j.optlastec.2025.112837

Zhenhua Tang , Jun-Lin Fang , Yu-Xiang Wu , Guanhua Wu , Si Yang , Yan-Ping Jiang , Xin-Gui Tang , Xiu-Juan Jiang , Yi-Chun Zhou , Ju Gao

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引用次数: 0

Abstract

Optoelectronic synaptic devices present a promising approach to address the limitations of the von Neumann architecture. In this work, the amorphous gallium oxide (a-Ga2O3) optoelectronic synaptic devices were prepared by using a cost-effective sol–gel technique at a relatively low temperature of 400 °C. The a-Ga₂O₃ devices exhibit an exceptionally wide bandgap and a stable, persistent photoconductive effect, allowing for the effective emulation of short- and long-term plasticity, paired-pulse potentiation, and pulse time-dependent plasticity akin to biological synapses. A digital image recognition method and a clothing image recognition method based on the LeNet-5 neural network model also were developed, achieving recognition rates of 97.8 % and 78 %, respectively. These findings are expected to contribute to the advancement of artificial synaptic devices, neural networks, and computing systems capable of optoelectronic operations.

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems