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수열합성법으로 제조된 Co_3O_4 분말을 사용한 후막 가스센서의 가스감지 특성The Gas Sensing Properties of Thick Film Gas Sensor Using Co_3O_4 Powder Prepared by Hydrothermal Reaction Method
- Other Titles
- The Gas Sensing Properties of Thick Film Gas Sensor Using Co_3O_4 Powder Prepared by Hydrothermal Reaction Method
- Issue Date
- 2011
- Publisher
- 한국센서학회
- Keywords
- Co_3O_4; Hydrothermal Reaction Method; Gas Sensor; Nano Size; Thick Films
- Citation
- 센서학회지, v.20, no.6, pp 406 - 411
- Pages
- 6
- Indexed
- KCI
- Journal Title
- 센서학회지
- Volume
- 20
- Number
- 6
- Start Page
- 406
- End Page
- 411
- ISSN
- 1225-5475
2093-7563
- Abstract
- Co_3O_4 thick film gas sensor using the powder prepared by hydrothermal reaction method(HRM) was fabricated. For comparison study, we also prepared the sensor using commercial Co_3O_4 powder under the same fabrication conditions. Sensitivity, time response, and selectivity of them to variable gases such as iso-C_4H_(10), CO, NH_3, and CH_4 were investigated. The sensor from the powder prepared by HRM showed higher sensitivity to every gas than those from commercial powder. For iso-C_4H_(10) gas, the sensitivities of both sensor to 100 ppm are 160 % and 40 %, respectively. Time response and selectivity of the sensor using the powder prepared by HRM were better than those of the sensor using commercial powder.
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