摘要
For the realization of retina-inspired neuromorphic visual systems which simulate basic functions of human visual systems,optoelectronic synapses capable of combining perceiving,processing,and memorizing in a single device have attracted immense interests.Here,optoelectronic synaptic transistors based on tris(2-phenylpyridine)iridium(Ir(ppy)_(3))and poly(3,3-didodecylquarterthiophene)(PQT-12)heterojunction structure are presented.The organic heterojunction serves as a basis for distinctive synaptic characteristics under different wavelengths of light.Furthermore,synaptic transistor arrays are fabricated to demonstrate their optical perception efficiency and color recognition capability under multiple illuminating conditions.The wavelength-tunability of synaptic behaviors further enables the mimicry of mood-modulated visual learning and memorizing processes of humans.More significantly,the computational dynamics of neurons of synaptic outputs including associated learning and optical logic functions can be successfully demonstrated on the presented devices.This work may locate the stage for future studies on optoelectronic synaptic devices toward the implementation of artificial visual systems.
出处
《Research》
SCIE
EI
CAS
CSCD
2021年第1期442-451,共10页
研究（英文）
基金
supported by the National Key Research and Development Program of China(2017YFA0103904)
the National Natural Science Foundation of China(61822405,62074111)
the Science&Technology Foundation of Shanghai(19JC1412402,20JC1415600)
Shuguang Program supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission(18SG20)
Beijing National Laboratory for Molecular Sciences(BNLMS201904)
the support of the Fundamental Research Funds for the Central Universities.
