A Novel Artificial Neuron-Like Gas Sensor Constructed from CuS Quantum Dots/Bi2S3 Nanosheets

作     者：Xinwei Chen Tao Wang Jia Shi Wen Lv Yutong Han Min Zeng Jianhua Yang Nantao Hu Yanjie Su Hao Wei Zhihua Zhou Zhi Yang Yafei Zhang Xinwei Chen;Tao Wang;Jia Shi;Wen Lv;Yutong Han;Min Zeng;Jianhua Yang;Nantao Hu;Yanjie Su;Hao Wei;Zhihua Zhou;Zhi Yang;Yafei Zhang

作者机构：Key Laboratory of Thin Film and Microfabrication(Ministry of Education)Department of Micro/Nano ElectronicsSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2022年第14卷第1期

页      面：167-181页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 080202[工学-机械电子工程] 08[工学] 0804[工学-仪器科学与技术] 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）] 0802[工学-机械工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(61971284) the Oceanic Interdisciplinary Program of Shanghai Jiao Tong University(SL2020ZD203 and SL2020MS031) Scientific Research Fund of Second Institute of Oceanography,Ministry of Natural Resources of P.R.China(SL2003) Shanghai Sailing Program(21YF1421400) Startup Fund for Youngman Research at Shanghai Jiao Tong University 

主　　题：Artificial neuron-like gas sensor Heterostructure design Nitrogen dioxide detection Wearable device 

摘      要：Real-time rapid detection of toxic gases at room temperature is particularly important for public health and environmental *** sensors based on conventional bulk materials often suffer from their poor surface-sensitive sites,leading to a very low gas adsorption ***,the charge transportation efficiency is usually inhibited by the low defect density of surface-sensitive area than that in the *** this work,a gas sensing structure model based on CuS quantum dots/Bi_(2)S_(3) nanosheets(CuS QDs/Bi_(2)S_(3) NSs)inspired by artificial neuron network is *** analysis by density functional calculation revealed that CuS QDs and Bi_(2)S_(3) NSs can be used as the main adsorption sites and charge transport pathways,***,the high-sensitivity sensing of NO_(2) can be realized by designing the artificial neuron-like *** experimental results showed that the CuS QDs with a size of about 8 nm are highly adsorbable,which can enhance the NO_(2) sensitivity due to the rich sensitive sites and quantum size *** Bi_(2)S_(3) NSs can be used as a charge transfer network channel to achieve efficient charge collection and *** neuron-like sensor that simulates biological smell shows a significantly enhanced response value(3.4),excellent responsiveness(18 s)and recovery rate(338 s),low theoretical detection limit of 78 ppb,and excellent selectivity for NO_(2).Furthermore,the developed wearable device can also realize the visual detection of NO2 through real-time signal changes.