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

页码：178 / 181

页数：4