Highly sensitive,humidity-tolerant and flexible NO_(2)sensors based on nanoplate Bi_(2)Se_(3)film  

作　　者：Yanjie Wang Cheng Tang Min Su Yixiong Ji Lei Xie Qi Yang Aijun Du Yong Zhou Jun Yang 

机构地区：[1]Key Laboratory of Optoelectronic Technology and System of Ministry of Education,College of Optoelectronic Engineering,Chongqing University,Chongqing 400044,China [2]School of Chemistry and Physics,Centre of Materials Science,Queensland University of Technology,Brisbane 4001,Australia [3]Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400714,China

出　　处：《Chinese Chemical Letters》2023年第8期408-411,共4页中国化学快报（英文版）

基　　金：This work was partially supported by Fundamental and Frontier Research Project of Chongqing(Nos.cstc2019jcyj-msxmX0037 and cstc2020jcyj-msxmX1041);National Natural Science Foundation of China(Nos.61704014 and 52175281);Youth Innovation Promotion Association of CAS(No.2021382).

摘　　要：Recently,two-dimension(2D)materials have fueled considerable interest in the field of gas sensing to cope urgent demands at specific scenarios.Unfortunately,the susceptibility to ambient humidity,and/or fragile operation stability always frustrate their further practicability.To overcome these drawbacks,we proposed one novel flexible gas sensor based on bismuth selenide(Bi_(2)Se_(3))nanoplates for sensitive NO_(2)detection at room temperature.The as-prepared Bi_(2)Se_(3)sensor exhibited favorable sensing performance,including remarkable NO_(2)selectivity,high response of 120%and fast response time of 81 s toward 5ppm NO_(2),an ultralow detection limit of 100 ppb,and nice stability.Besides,the excellent humidity tolerance and mechanical flexibility endowed Bi_(2)Se_(3)sensors with admirable reliability under harsh working conditions.The first-principles calculation further revealed the insights of extraordinary NO_(2)selectivity and the underlying gas-sensing mechanism.

关 键 词：Flexible NO_(2)sensor Bi_(2)Se_(3)nanoplates Humidity tolerance Room-temperature operation First-principles calculation 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TB383.2[自动化与计算机技术—控制科学与工程]