| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 741029 | Sensors and Actuators B: Chemical | 2010 | 5 Pages |
Abstract
As a novel humidity sensing material, Bi0.5K0.5TiO3 (BKT) powder was synthesized by a chemical solution method, and the humidity sensor was composed of BKT powder, Ag–Pd interdigitated electrodes and Al2O3 ceramic substrate. The humidity sensing properties were measured by using LCR analyzer. The experimental results show that the impedance changes about four orders of magnitude within the whole humidity range from 11% to 95% relative humidity (RH). At the frequency of 100 Hz, the response time and recovery time are about 12 and 25 s, and the maximum hysteresis is around 3% RH. They indicate that BKT powder has good humidity sensing properties, and it is of the potential applications for fabricating high performance humidity sensors.
Related Topics
Physical Sciences and Engineering
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Authors
Yong Zhang, Xuejun Zheng, Tong Zhang, Lunjun Gong, Shunhong Dai, Yiqiang Chen,