Humidity sensor based on LiCl-doped ZnO electrospun nanofibers
writer：Wei Wang, Zhenyu Li, Li Liu, Hongnan Zhang, Wei Zheng, Yu Wang, Huimin Huang, Zhaojie Wang, Ce Wang
keywords：Humidity sensor; ZnO; Electrospinning; Nanofiber; Li+-doped
source：期刊
specific source：SENSORS AND ACTUATORS B-CHEMICAL
Issue time：2010年
The humidity sensitive characteristics of sensors fabricated from pure ZnO nanofibers and LiCl-doped ZnO composite fibers by screen-printing on ceramic substrates with carbon interdigital electrodes have been investigated. The best result is obtained for 1.2 wt% LiCl-doped sample, which exhibits high humidity sensitivity, rapid response and recovery, small hysteresis, excellent linearity, and good reproducibility. The impedance of the sensor varies more than four orders of magnitude during the whole relative humidity (RH) from 11 to 95%. The response time and recovery time of the sensor is about 3 and 6 s, respectively. These results make our product a good candidate in fabricating high performance humidity sensors.