Abstract
Gas sensors have attracted much attentions due to their applications for alarming dangerous gases. It is important for a gas sensor to find out suitable sensing materials realizing its performance. Two-dimensional materials with high surface-to-volume ratios are ideal candidates acting as gas-sensing materials. Here, we report NO2 and SO2 gas-sensing properties of InX (X = Cl, Br, and I) monolayers based on density functional theory calculations. The perfect monolayers are more sensitive to NO2 molecule than SO2, but have long recovery time for NO2, which can be amended by applying external in-plane tensile stress. Therefore, these monolayers with the tensile stress are good materials for detecting NO2 gas. In addition, the sensitivity of monolayers to detect the SO2 molecule can be significantly improved by introducing In vacancies into these monolayers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
