光电人工突触研究进展  

Recent Progress in Optoelectronic Artificial Synapse Devices

作　　者：杜剑宇 葛琛 DU Jianyu;GE Chen(School of Science,Tianjin University of Technology,Tianjin 300382,China;Institute of Physics,Chinese Academy of Sciences,Beijing 100039,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]天津理工大学理学院,天津300382 [2]中国科学院物理研究所,北京100039 [3]中国科学院大学,北京100049

出　　处：《无机材料学报》2023年第4期378-386,共9页Journal of Inorganic Materials

基　　金：国家自然科学基金(12222414,12074416);中国科学院青年创新促进会(2018008)。

摘　　要：传统的人工视觉系统基于冯•诺依曼架构,其视觉采集单元、处理单元和存储单元分离,因而冗余数据在各个单元之间传递会造成高延迟和能耗。为了解决这一问题,新一代神经形态视觉系统应用而生,其具有感知、存储、计算一体化的架构,既可以减少数据传递,又可以提高数据处理效率。作为神经形态视觉系统的硬件实现基础,光电人工突触器件近年来得到广泛研究。光电人工突触器件将光敏元件与突触器件的功能相结合,为实现低延迟、高能效和高可靠性的神经形态视觉系统提供了新的可能。虽然光电人工突触材料千差万别,但其工作机理主要包括氧空位的电离和解离、光生载流子的捕获和释放、光致相变以及光与铁电复杂相互作用等。本文从工作机理的角度,介绍了光电人工突触器件的最新研究进展,并分析了不同工作机理的优点及其面临的挑战。最后,概述了未来光电人工突触的应用前景和发展方向。For the conventional von Neumann based vision systems,the sensing,memory,and processing units are separated.Shuttling of redundant data between separated image sensing,memory,and processing units causes a high latency and energy consumption.To break these limitations,the next-generation neuromorphic visual systems,which integrate light information sensing,memory,and processing,can reduce the data transfer,thus improving their time and energy efficiencies.As the basis of the hardware-implementing of neuromorphic visual systems,optoelectronic artificial synapse devices have been extensively investigated in recent years.By integrating the functions of synaptic devices and light-sensing elements,the optoelectronic artificial synapse devices pave the way for constructing new neuromorphic vision systems with low latency,high energy efficiency and good reliability.Many materials are widely utilized for optoelectronic artificial synapse devices,and operation mechanisms of the present optoelectronic artificial synapse devices mainly include the ionization and dissociation of oxygen vacancy,the trapping/detrapping of photogenerated carriers,the light-induced phase change,and the interaction between light and ferroelectric materials.In this short review,the recent progresses in optoelectronic artificial synapse devices are introduced from the perspectives of their operation mechanisms.Besides,advantages and challenges of the devices are analyzed from the view of operation mechanisms.Finally,the advanced prospect and research aspect of optoelectronic artificial synapse devices are outlined for the application.

关 键 词：光电人工突触 氧空位 光生载流子 光致相变 光致铁电极化反转 综述 

分 类 号：TQ174[化学工程—陶瓷工业]