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Electrical and CO gas sensing properties of ZnO-SnO2 composites SCIE SCOPUS
- Title
- Electrical and CO gas sensing properties of ZnO-SnO2 composites
- Date Issued
- 1998-10-15
- Publisher
- ELSEVIER SCIENCE SA
- Abstract
- ZnO-SnO2 composites of 0-100 mol% composition range were fabricated in the form of pellet by sintering at 900 degrees C and their electrical conductivity and CO gas sensitivity were measured between 70 and 500 degrees C. SnO2-rich composites showed higher sensitivity values than purl SnO2. ZnO-rich composites have more porous microstructure and thus are more sensitive to CO gas at all temperatures than pure ZnO. The effects of microstructure and composition on the gas sensitivity were discussed. SnO2-ZnO grain boundary was also proposed to be responsible for the gas sensitivity. (C) 1998 Elsevier Science S.A. All rights reserved.
- Keywords
- ZnO; SnO2; CO sensor; composite; heterocontact; SENSITIVITY; SENSORS; CONTACT; FILM; NO2
- ISSN
- 0925-4005
- Article Type
- Article
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, vol. 52, no. 3, page. 251 - 256, 1998-10-15
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Related Researcher
- 최경만CHOI, GYEONG MAN
- Dept of Materials Science & Enginrg