期刊
THIN SOLID FILMS
卷 371, 期 1-2, 页码 249-253出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0040-6090(00)01011-7
关键词
tin oxide; thin films; carbon monoxide; long-term stability
There is an increasing demand for semiconducting gas sensors for several monitoring applications that have sensitivity, selectivity and reliability on a long-term scale. In this paper, we have described the preparation of SnO2-Au thin film sensors by the RGTO technique; these sensors have proved to be capable of sensitive and selective detection of CO. The TEM and AES analysis showed that 6 months of sensor aging at 400 degrees C did not produce any valuable rearrangement of gold atoms onto a tin dioxide surface, Most of the sensor resistance variation was observed during the first 20 days, and a limited drift was observed in the remaining period. (C) 2000 Elsevier Science S.A. All rights reserved.
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