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Fabrication and ethanol gas sensing characteristics of the thick film ethanol gas sensors

후막형 에탄올 가스 감지소자의 제조 및 특성

  • Choi, Dong-Han (School of Electronics and Information Engineering, Cheongju University)
  • 최동한 (청주대학교 전자정보공학부)
  • Published : 2007.11.30

Abstract

$SnO_{2}$-based thick film ethanol gas sensors were fabricated on alumina substrates and their ethanol gas sensing characteristics were investigated. The film sintered at $400^{\circ}C$ for 2 hrs. showed the highest sensitivity to ethanol gas and the sensitivity of the film to 1000 ppm ethanol gas in air was 97 % at an operating temperature of $250^{\circ}C$. The addition of $Fe_{2}O_{3}$ to $SnO_{2}$ enhanced the sensitivity by changing the type and number of surface acidic/basic sites.

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References

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