Improved Response/Recovery Time and Sensitivity of SnSe Nanosheet Humidity Sensor by LiCl Incorporation
Kaimin Zhu, Yong Tang, Xiangli Zhong, Li Xiong, Yong Zhang, Congbing Tan, Hongjia Song, Jinbin Wang
Abstract
Abstract The use of inorganic salt composite nanomaterials to form nanocomposite humidity‐sensing materials is considered to be an effective way to promote the integral performances of humidity sensors. In this work, by combining the advantages of SnSe nanosheet and LiCl, a novel composite structure of LiCl nanoparticles and SnSe nanosheet (LiCl:SnSe nanosheet) is constructed as the humidity‐sensing materials in humidity sensors. Compared with the properties of a resistance‐type humidity sensor based on SnSe nanosheet, the integral humidity‐sensing properties of LiCl:SnSe nanosheet are improved, especially in response and recovery times (shorten to 12 s/4 s) and sensitivity (up to 3.21 × 10 5 %). These results indicate that LiCl:SnSe nanosheet may be a potential humidity‐sensing material for fabricating humidity sensors with high performance.