Title of article
Role of hetero-junctions in oxide semiconductor gas sensors
Author/Authors
Yamazoe، نويسنده , , Noboru and Tamaki، نويسنده , , Jun and Miura، نويسنده , , Norio، نويسنده ,
Pages
4
From page
178
To page
181
Abstract
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 state 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.
Keywords
Semiconductor gas sensors , Antenna material , Hetero-junctions
Journal title
Astroparticle Physics
Record number
2065809
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