Programmable van-der-Waals heterostructure-enabled optoelectronic synaptic floating-gate transistors with ultra-low energy consumption

作     者：Yilin Sun Mingjie Li Yingtao Ding Huaipeng Wang Han Wang Zhiming Chen Dan Xie 

作者机构：School of Integrated Circuits and ElectronicsBeijing Institute of TechnologyBeijingChina School of Integrated CircuitsBeijing National Research Center for Information Science and Technology(BNRist)Tsinghua UniversityBeijingChina 

出 版 物：《InfoMat》 (信息材料（英文）)

年 卷 期：2022年第4卷第10期

页      面：78-89页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:62104017,52072204,62074015 National Postdoctoral Program for Innovative Talents of China,Grant/Award Number:BX20200049 China Postdoctoral Science Foundation,Grant/Award Number:2021M690013 

主　　题：float-gating transistor optoelectronic synapses programmable synaptic plasticity ultralow energy consumption van-der-Waals heterostructures 

摘      要：Van der Waals(vdW)heterostructures provide a unique opportunity to develop various electronic and optoelectronic devices with specific functions by designing novel device structures,especially for bioinspired neuromorphic optoelectronic devices,which require the integration of nonvolatile memory and excellent optical ***,we demonstrate a programmable optoelectronic synaptic floating-gate transistor based on multilayer graphene/h-BN/MoS2 vdW heterostructures,where both plasticity emulation and modulation were successfully realized in a single *** dynamic tunneling process of photogenerated carriers through the as-fabricated vdW heterostructures contributed to a large memory ratio(105)between program and erase *** device can work as a functional or silent synapse by applying a program/erase voltage spike as a modulatory signal to determine the response to light stimulation,leading to a programmable operation in optoelectronic synaptic ***,an ultra-low energy consumption per light spike event(~2.5 fJ)was obtained in the program state owing to a suppressed noise current by program operation in our floating-gate *** study proposes a feasible strategy to improve the functions of optoelectronic synaptic devices with ultra-low energy consumption based on vdW heterostructures designed for highly efficient artificial neural networks.