基于Bi2O2Se/Cs3Cu2I5异质结的光电突触用于神经形态计算

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-01-02 DOI:10.1063/5.0236853

Jinwen Lin, Bin Li, Zheng Yin, Sicheng Wan, Yao Meng, Hong Zhou, Fangliang Gao, Shuti Li, Yong Zhang, Qingbing Zha, Jinhua Li, Said Nasir Khisro, Xinman Chen

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引用次数: 0

摘要

在这项工作中，我们报道了一种基于Bi2O2Se/Cs3Cu2I5异质结的光电突触，该异质结是通过化学气相沉积方法沉积Bi2O2Se和Cs3Cu2I5薄膜形成的。制备的Au/Bi2O2Se/Cs3Cu2I5/Au器件在可见光照射下表现出光可调的光响应。利用光电流的光可调演化，可以在单个突触装置上方便地再现成对脉冲促进、短期可塑性向长期可塑性转变、联想学习和光编码等突触功能。此外，基于构建的器件阵列（5 × 7），演示了前端图像预处理以提高图像识别的准确性和效率。这表明Bi2O2Se/Cs3Cu2I5光电突触在即将到来的神经形态计算中的潜在应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Optoelectronic synapse based on the Bi2O2Se/Cs3Cu2I5 heterojunction for neuromorphic computing

In this work, we report an optoelectronic synapse based on the Bi2O2Se/Cs3Cu2I5 heterojunction formed by consequently depositing Bi2O2Se and Cs3Cu2I5 thin films by chemical vapor deposition methods. The fabricated Au/Bi2O2Se/Cs3Cu2I5/Au devices exhibit the light-tunable photoresponse under visible light illumination. Synaptic functions including paired-pulse facilitation, the transition from short-term plasticity to long-term plasticity, associative learning and optical encoding, are conveniently reproduced on one single synaptic device by utilizing the light-tunable evolution of photocurrent. Furthermore, the front-end image preprocessing to enhance the accuracy and efficiency of image recognition was demonstrated based on the constructed device array (5 × 7). This indicates the potential application of Bi2O2Se/Cs3Cu2I5 optoelectronic synapses for the forthcoming neuromorphic computing.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.