Room-Temperature Gas Sensors Under Photoactivation:From Metal Oxides to 2D Materials  

作　　者：Rahul Kumar Xianghong Liu Jun Zhang Mahesh Kumar 

机构地区：[1]Department of Electrical Engineering,Indian Institute of Technology Jodhpur,Jodhpur 342037,India [2]College of Physics,Center for Marine Observation and Communications,Qingdao University,Qingdao 266071,People’s Republic of China [3]Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),Nankai University,Tianjin 300071,People’s Republic of China

出　　处：《Nano-Micro Letters》2020年第11期292-328,共37页纳微快报（英文版）

基　　金：the financial support of the Department of Science and Engineering Research Board (SERB) (Sanction Order No. CRG/2019/000112)。

摘　　要：Room-temperature gas sensors have aroused great attention in current gas sensor technology because of deemed demand of cheap,low power consumption and portable sensors for rapidly growing Internet of things applications.As an important approach,light illumination has been exploited for room-temperature operation with improving gas sensor's attributes including sensitivity,speed and selectivity.This review provides an overview of the utilization of photoactivated nanomaterials in gas sensing field.First,recent advances in gas sensing of some exciting different nanostructures and hybrids of metal oxide semiconductors under light illumination are highlighted.Later,excellent gas sensing performance of emerging two-dimensional materialsbased sensors under light illumination is discussed in details with proposed gas sensing mechanism.Originated impressive features from the interaction of photons with sensing materials are elucidated in the context of modulating sensing characteristics.Finally,the review concludes with key and constructive insights into current and future perspectives in the light-activated nanomaterials for optoelectronic gas sensor applications.

关 键 词：Gas sensor Room temperature PHOTOACTIVATION Metal oxide 2D materials 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TB383.1[自动化与计算机技术—控制科学与工程]