Sol-gel derived tin oxide thin film gas sensors

被引：0
|
作者：
Teeramongkonrasmee, A [1 ]
Sriyudthsak, M [1 ]
机构：
[1] Chulalongkorn Univ, Fac Engn, Dept Elect Engn, Bangkok 10330, Thailand
来源：
TECHNICAL DIGEST OF THE SEVENTH INTERNATIONAL MEETING ON CHEMICAL SENSORS | 1998年
关键词：
D O I：
暂无
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Sol-gel derived SnO2 thin film gas sensors have been prepared and characterized. The tin alkoxide precursor was synthesized from the reactions involving tin tetrachloride and sodium ethoxide. The sol of tin alkoxide precursor was deposited on glass substrates by spin coating technique and annealed at 550 degrees C. The gas responses had been performed with a flow injection analysis by using liquid samples of alcohol and ammonia. The experimental results showed that the film thickness strongly affected gas sensitivity of the SnO2 films to alcohol and ammonia. The response to alcohol and ammonia were discussed by the power law model. From this model, SnO2 sensors could gave linear output in the range of 0.26-10 % for alcohol and 0.05-10 % by volume for ammonia with the operating temperature of 350 degrees C.
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页码：651 / 653
页数：3
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