Lead-free perovskites-based photonic synaptic devices with zero electric energy consumption  

作　　者：Dandan HAO Di YANG Haixia LIANG Jia HUANG Fukai SHAN 

机构地区：[1]College of Electronics and Information,Qingdao University,Qingdao 266071,China [2]Key Laboratory of Biofuels,Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao 266101,China [3]School of Materials Science and Engineering,Tongji University,Shanghai 201804,China [4]National Key Laboratory of Autonomous Intelligent Unmanned Systems,Tongji University,Shanghai 201804,China

出　　处：《Science China(Information Sciences)》2024年第6期429-437,共9页中国科学（信息科学）（英文版）

基　　金：supported by National Key Research and Development Program of China(Grant Nos.2021YFA1101303,2019YFE0121800);Science&Technology Foundation of Shanghai(Grant No.20JC1415600);National Natural Science Foundation of China(Grant Nos.62074111,62088101);Innovation Program of Shanghai Municipal Education Commission(Grant No.2021-01-07-00-07-E00096);Shanghai Municipal Science and Technology Major Project(Grant No.2021SHZDZX0100);Natural Science Foundation of Shandong Province(Grant Nos.ZR2022QB009,ZR2022MF246)。

摘　　要：The von Neumann bottleneck is a critical limitation in synaptic devices.Therefore,artificial synaptic devices resembling biological neuromorphic synapses have been developed to overcome the von Neumann bottleneck.However,synaptic devices require voltages,which results in considerable energy consumption.Here,photonic synaptic devices with the vertical structure of indium tin oxide(ITO)/SnO_(2)/Al_(2)O_(3)/CsBi_(3)I_(10)/Au are fabricated,which can work in the self-powered mode owing to the photovoltaic effect endowed by a vertical multilayer structure.Several fundamental synaptic functions,such as excitatory postsynaptic current,paired-pulse facilitation,short-term plasticity(STP),long-term plasticity(LTP),pulse-frequency-dependent plasticity,transition of STP to LTP,and the learning experience are emulated.Moreover,Morse-coded external light information is decoded by self-powered photonic synaptic devices.The results indicate that self-powered photonic synaptic devices based on lead-free perovskites exhibit great potential for efficient neuromorphic computing and optical wireless communication.

关 键 词：photonic synaptic devices lead-free perovskites zero energy consumption synaptic plasticity Morse code 

分 类 号：TN03[电子电信—物理电子学]