Advances in optoelectronic artificial synapses

作     者：Li, Ying Shen, Guozhen 

作者机构：Chinese Acad Sci Inst Semicond State Key Lab Superlatt & Microstruct Beijing 100083 Peoples R China Beijing Inst Technol Sch Integrated Circuits & Elect Beijing 100081 Peoples R China 

出 版 物：《CELL REPORTS PHYSICAL SCIENCE》 (Cell Rep. Phys. Sci.)

年 卷 期：2022年第3卷第9期

核心收录：

基　　金：National Natural Science Foundation of China [61888102, 61625404] China Postdoctoral Science Foundation [BX2021290, 2022M713065] 

主　　题：optoelectronic synapses ionization and dissociation of oxygen vacancies charge-trapping effect phase transition logic function image memory Pavlov’s dog pattern recognition 

摘      要：The biological neuromorphic system exhibits a high degree of con-nectivity to process information. Inspired by function, optoelec-tronic synapses are expected to pave a way to overcome the von Neumann bottleneck for nonconventional computing, which inte-grates synaptic and optical-sensing functions for visual information processing and complex learning and memory in an energy-efficient way. Herein, this review summarizes the working mechanisms of light-stimulated artificial synapses, including ionization and dissoci-ation of oxygen vacancies, capture and release of carriers through barriers formed by heterojunctions, capture and release of carriers at the semiconductor and dielectric interface, and phase transition. Then, we present a comprehensive overview of the advanced prog-ress in different material systems, including two-dimensional mate-rials, organic material, metal halide, and metal oxide. The existing application scenarios of various synaptic devices are outlined. Finally, the current challenges and perspective toward the develop-ment of optoelectronic artificial synapses are briefly discussed for future applications.