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Metal Oxide Gas Sensors: Sensitivity and Influencing Factors
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan, 250061, China
* Author to whom correspondence should be addressed.
Received: 17 February 2010; in revised form: 10 March 2010 / Accepted: 14 March 2010 / Published: 15 March 2010
Abstract: Conductometric semiconducting metal oxide gas sensors have been widely used and investigated in the detection of gases. Investigations have indicated that the gas sensing process is strongly related to surface reactions, so one of the important parameters of gas sensors, the sensitivity of the metal oxide based materials, will change with the factors influencing the surface reactions, such as chemical components, surface-modification and microstructures of sensing layers, temperature and humidity. In this brief review, attention will be focused on changes of sensitivity of conductometric semiconducting metal oxide gas sensors due to the five factors mentioned above.
Keywords: metal oxide; gas sensors; sensitivity; surface reaction
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Cite This Article
MDPI and ACS Style
Wang, C.; Yin, L.; Zhang, L.; Xiang, D.; Gao, R. Metal Oxide Gas Sensors: Sensitivity and Influencing Factors. Sensors 2010, 10, 2088-2106.
Wang C, Yin L, Zhang L, Xiang D, Gao R. Metal Oxide Gas Sensors: Sensitivity and Influencing Factors. Sensors. 2010; 10(3):2088-2106.
Wang, Chengxiang; Yin, Longwei; Zhang, Luyuan; Xiang, Dong; Gao, Rui. 2010. "Metal Oxide Gas Sensors: Sensitivity and Influencing Factors." Sensors 10, no. 3: 2088-2106.