Role of hetero-junctions in oxide semiconductor gas sensors

被引：41
作者：
Yamazoe, N
Tamaki, J
Miura, N
机构：
[1] Dept. of Mat. Science and Technology, Grad. School of Engineering Sciences, Kyushu University, Kasuga-shi
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1996年 / 41卷 / 01期
关键词：
hetero-junctions; semiconductor gas sensors; antenna material;
D O I：
10.1016/S0921-5107(96)01648-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new design concept of semiconductor gas sensors, which introduces a foreign antenna material to a gas in problem, is described for the detection of dilute odorous gases such as HN3 and H2S. The antenna material, dispersed on the surface of a semiconducting oxide, interacts with the gas sensitively and selectively, and the resulting change in its chemical stale induces a change in semiconducting properties of the underlying oxide through hetero-junctions. Typical examples of such sensors include NH3 sensors using Au- and Pt-WO3 and an H2S sensor using CuO-SnO2.
引用
收藏
页码：178 / 181
页数：4
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