CuTBP(Copper-tetra-tert-butylphthalocyanine) 화학 저항 장치의 $NO_2$ 가스 탐지 특성에 관한 연구

A study on the $NO_2$ gas detection characteristics of the CuTBP(Copper-tetra-tert-butylphthalocyanine) chemiresistor device

  • 구자룡 (홍익대학교전자전기공학부) ;
  • 이창희 (홍익대학교전자전기공학부) ;
  • 김태완 (홍익대학교 물리학과) ;
  • 김정수 (홍익대학교전자전기공학부)
  • 발행 : 1997.03.01

초록

We have investigated gas-detection characteristics of CuTBP (Copper-tetra-tert-butylphthalocyanine) chemiresistor devices exposed to air/200ppm N $O_{2}$ gases. The CuTBP films were made by Langmuir-Blodgett (LB) techniques. Sensitivity, response time, recovery time, and reproducibility of the devices were measured by current voltage characteristics. Interdigital electrode was used to improve the sensitivity. It was observed that a conductance G increases monotonically as the number of interdigital electrode finger pairs increases. As the number of interdigital electrode finger pairs increases, the sensitivity S( $G_{gas}$/ $G_{air}$) increases more than 50 times and stable. But the response time was delayed. The average recovery time of the CuTBP chemiresistor devices turned out to be about 100 second. We have also investigated applicability of the CuTBP chemiresistor device for a gas sensor.sor.

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