Development of La3+ Doped CeO2 Thick Film Humidity Sensors

Abstract and Applied Analysis

Research Article

Hamid Reza Karimi¹  Aihua Zhang²  Chunjie Wang² 

[1] Department of Engineering, Faculty of Engineering and Science, The University of Agder, 4898 Grimstad, Norway, uia.no;College of Engineering, Bohai University, Jinzhou 121013, China, bhu.edu.cn

Others  :  1319765
DOI  :  10.1155/2014/297632

 received in 2014-01-02, accepted in 2014-01-18,  发布年份 2014

【 摘 要 】

The humidity sensitive characteristics of the sensor fabricated from 10 mol% La2O3 doped CeO2 nanopowders with particle size 17.26 nm synthesized via hydrothermal method were investigated at different frequencies. It was found that the sensor shows high humidity sensitivity, rapid response-recovery characteristics, and narrow hysteresis loop at 100 Hz in the relative humidity range from 11% to 95%. The impedance of the sensor decreases by about five orders of magnitude as relative humidity increases. The maximum humidity hysteresis is about 6% RH, and the response and recovery time is 12 and 13 s, respectively. These results indicate that the nanosized La2O3 doped CeO2 powder has potential application as high-performance humidity sensor.

【 授权许可】

CC BY   
Copyright © 2014 Chunjie Wang et al. 2014

【 图 表 】

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