Temperature-controlled multisensory neuromorphic devices for artificial visual dynamic capture enhancement  

作　　者：Gengxu Chen Xipeng Yu Changsong Gao Yan Dai Yanxue Hao Rengjian Yu Huipeng Chen Tailiang Guo 

机构地区：[1]National&Local United Engineering Laboratory of Flat Panel Display Technology,Institute of Optoelectronic Display,College of Physics and Information Engineering,Fuzhou University,Fuzhou 350108,China [2]Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350100,China

出　　处：《Nano Research》2023年第5期7661-7670,共10页纳米研究（英文版）

基　　金：the National Natural Science Foundation of China(Nos.62274035,U21A20497,61974029,and 11604051);the National Key Research and Development Program of China(Nos.2022YFB3603803 and 2022YFB3603802);the Natural Science Foundation of Fujian Province(Nos.2020J05104 and 2020J06012);Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China(Nos.2021ZZ129 and 2021ZZ130).

摘　　要：Multi-sensory neuromorphic devices(MND)have broad potential in overcoming the structural bottleneck of von Neumann in the era of big data.However,the current multisensory artificial neuromorphic system is mainly based on unitary nonvolatile memory or volatile synaptic devices without intrinsic thermal sensitivity,which limits the range of biological multisensory perception and the flexibility and computational efficiency of the neural morphological computing system.Here,a temperature-dependent memory/synaptic hybrid artificial neuromorphic device based on floating gate phototransistors(FGT)is fabricated.The CsPbBr_(3)/TiO_(2)core–shell nanocrystals(NCs)prepared by in-situ pre-protection low-temperature solvothermal method were used as the photosensitive layer.The device exhibits remarkable multi-level visual memory with a large memory window of 59.6 V at room temperature.Surprisingly,when the temperature varies from 20 to 120℃back and forth,the device can switch between nonvolatile memory and volatile synaptic device with reconfigurable and reversible behaviors,which contributes to the efficient visual/thermal fusion perception.This work expands the sensory range of multisensory devices and promotes the development of memory and neuromorphic devices based on organic field-effect transistors(OFET).

关 键 词：floating gate phototransistors perovskite nanocrystals temperature multisensory neuromorphic devices 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]