Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The CO Gas Sensing Properties of ZnO-WO$_3$Composite Ceramics

ZnO-WO$_3$복합체의 일산화탄소 가스 감응특성

  • 김태원 (원광대학교 공대 전자재료공학과) ;
  • 정승우 (원광대학교 공대 전자재료공학과) ;
  • 최우성 (원광대학교 공대 전자재료공학과) ;
  • 박춘배 (원광대학교 공대 전자재료공학과)
  • Published : 1997.11.01
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Abstract

We prepared 0~20mo1% WO$_3$added ZnO composite ceramics in order to promote a CO gas sensitivity. Using SE,. we observed the microstructure of sample. The resistances of sample were measured by High Voltage Measure/source Unit in the temperature range of +5V~-5V. The measured 1000ppm CO sensitivities of pure ZnO were about 1~4.3, and the measured 1000ppm CO sensitivities of ZnO-WO$_3$composite ceramics were about 1~8.2. Therefore, the 1000ppm CO sensitivities of ZnO-WO$_3$composite ceramics were about 2 times larger than that of pure ZnO.

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