Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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High sensitivity ethanol gas sensors

고감도 에탄올 가스 센서

  • Choi, Dong-Han (School of Electronics and Information Engineering, Cheongju University)
  • Published : 2007.09.29
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Abstract

Highly sensitive thick film ethanol gas sensors based on a nanocrystalline $In_{2}O_{3}$ were fabricated by painting method on alumina substrates. The crystal structure of the $In_{2}O_{3}$ powder was characterised by XRD analysis. The microstructure of the films were characterised using FE-SEM. The experimental results of the ethanol gas sensing characteristics indicated that the undoped $In_{2}O_{3}$ thick film has a high sensitivity. The sensitivity of the film heat treated at $400^{\circ}C$ for 2 hrs. was as high as 32.73 at an operating temperature of $200^{\circ}C$ to 1000 ppm ethanol gas in air.

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References

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