ETHANOL GAS-SENSING PROPERTIES OF SNO2-BASED THIN-FILM SENSORS PREPARED BY THE SOL-GEL PROCESS

被引：44

作者：

PARK, SS

ZHENG, HX

MACKENZIE, JD

机构：

[1] Department of Materials Science and Engineering, University of California at Los Angeles, Los Angeles

来源：

MATERIALS LETTERS | 1993年 / 17卷 / 06期

关键词：

D O I：

10.1016/0167-577X(93)90123-F

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

SnO2 thin-film gas sensors containing La2O2 and Pt were prepared by the sol-gel process. The films were sensitive to ethanol gas as demonstrated by a change in electrical conductivity. The sensitivity was markedly promoted by loading with La2O3/Pt and increasing film thickness. The response time increased with the amount of La2O3 and film thickness. The response time was in the range of 40-70 s at 300 degrees C and could be decreased to 35 s by loading with Pt. The doubly-loaded film sensors, Pt-La2O3-SnO2, displayed enhanced ethanol gas sensing properties.

引用

页码：346 / 352

页数：7

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