Flexible biomimetic olfactory neurons based on organic heterojunction  

作　　者：Tianyang Feng Jialin Meng Hang Xu Yafen Yang Tianyu Wang Hao Zhu Qingqing Sun David Wei Zhang Lin Chen 

机构地区：[1]School of Microelectronics,Fudan University,Shanghai 200433,China [2]School of Integrated Circuits,Shandong University,Jinan 250100,China [3]National Integrated Circuit Innovation Center,Shanghai 201203,China

出　　处：《Journal of Semiconductors》2024年第12期80-86,共7页半导体学报（英文版）

基　　金：supported by the National Key Research and Development Program of China (2021YFA120260);the NSFC (92064009,22175042,12474071);the Science and Technology Commission of Shanghai Municipality (22501100900);Natural Science Foundation of Shandong Province (ZR2024YQ051);the China Postdoctoral Science Foundation (2022TQ0068,2023M740644);the Shanghai Sailing Program (23YF1402200,23YF1402400).

摘　　要：Simulating the human olfactory nervous system is one of the key issues in the field of neuromorphic computing.Olfac-tory neurons interact with gas molecules,transmitting and storing odor information to the olfactory center of the brain.In order to emulate the complex functionalities of olfactory neurons,this study presents a flexible olfactory synapse transistor(OST)based on pentacene/C8-BTBT organic heterojunction.By modulating the interface between the energy bands of the organic semiconductor layers,this device demonstrates high sensitivity(ppb level)and memory function for NH3 sensing.Typi-cal synaptic behaviors triggered by NH_(3) pulses have been successfully demonstrated,such as inhibitory postsynaptic currents(IPSC),paired-pulse depression(PPD),long-term potentiation/depression(LTP/LTD),and transition from short-term depression(STD)to long-term depression(LTD).Furthermore,this device maintains stable olfactory synaptic functions even under differ-ent bending conditions,which can present new insights and possibilities for flexible synaptic systems and bio-inspired elec-tronic products.

关 键 词：olfactory neurons organic transistor gas-modulated flexible electronic device 

分 类 号：Q811[生物学—生物工程] TN32[电子电信—物理电子学]