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

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

作者机构：College of Electronics and InformationQingdao University Key Laboratory of BiofuelsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of Sciences School of Materials Science and EngineeringTongji University National Key Laboratory of Autonomous Intelligent Unmanned SystemsTongji University 

出 版 物：《Science China(Information Sciences)》 (中国科学:信息科学(英文版))

年 卷 期：2024年第67卷第6期

页      面：433-441页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

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) 

主　　题：photonic synaptic devices lead-free perovskites zero energy consumption synaptic plasticity Morse code 

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）/SnO2/Al2O3/CsBi3I10/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.