Air-stable synaptic devices based on bismuth triiodide and carbon nanotubes

作     者：Dandan Hao Junyao Zhang Li Li Ben Yang Pu Guo Shiqi Zhang Jia Huang Dandan Hao;Junyao Zhang;Li Li;Ben Yang;Pu Guo;Shiqi Zhang;Jia Huang

作者机构：Interdisciplinary Materials Research CenterSchool of Materials Science and EngineeringFrontiers Science Center for Intelligent Autonomous SystemsTongji UniversityShanghai 201804China Translational Research Institute of Brain and Brain-Like IntelligenceShanghai Fourth People’s Hospital Affiliated to Tongji UniversitySchool of Materials Science and EngineeringTongji UniversityShanghai 200434China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第6期

页      面：5435-5442页

核心收录：

学科分类：08[工学] 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：supported by the National Natural Science Foundation of China(Nos.61822405,62074111) the Science&Technology Foundation of Shanghai(Nos.19JC1412402,20JC1415600) Shanghai Municipal Science and Technology Major Project(No.2021SHZDZX0100) Shanghai Municipal Commission of Science and Technology Project(No.19511132101) the support of the Fundamental Research Funds for the Central Universities 

主　　题：semiconducting single-walled carbon nanotubes bismuth triiodide optical synaptic devices stability human visual memory 

摘      要：Artificial synaptic devices with the functions of emulating important biological synaptic behaviors are playing an increasingly important role in the development of neuromorphic computing ***-walled carbon nanotubes(SWCNTs)with excellent electrical properties and high stability have been studied as active materials for synaptic ***,the performance of optical synaptic devices(OSDs)based on pure SWCNTs is limited by the weak light absorption ***,bismuth triiodide(BiI_(3)),an environmentally stable and friendly optoelectronic material,is firstly combined with SWCNTs to fabricate OSDs with decent properties of perceiving and memorizing optical *** OSDs can exhibit typical synaptic behaviors including excitatory postsynaptic current,paired-pulse facilitation,and short/long-term ***,the photoresponse of the OSD is independent of pulse light wavelength in the range of 365 to 650 nm,different from most of the previously reported OSDs,which usually have wavelength-dependent ***-dependent photo-response behaviors of the devices are ***,the OSD without encapsulation holds good excitatory post-synaptic current(EPSC)behavior after being stored in the ambient environment for 170 days,indicating reliable environmental ***,an OSD array with nine synaptic devices is employed to mimic the human visual perception and memory *** results suggest the feasibility of BiI3/SWCNTs-based OSDs for the simulation of human visual memory.