Electrical & Electronic Materials (E2M - 전기 전자와 첨단 소재)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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$NO_2$Gas Detection Characteristics of Octa-dodecyloxy Copper-phthalocyanine Langmuir-Blodgett(LB) Films

  • Koo, Ja-Ryong (School of Electronics & Electrical Engineering, Hong-Ik University) ;
  • Kim, Young-Kwan (Department of Chemical Engineering, Hong-Ik University) ;
  • Kim, Jung-Soo (School of Electronics & Electrical Engineering, Hong-Ik University)
  • Published : 1998.10.01
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Abstract

Metallo-phthalocyanines(MPcs) are very sensitive to toxic molecules such as electron affinitive NO2 gas and also chemically and thermally stable since losts of MPcs have been studied for the potential chemcial gas sensors for $NO_2$ using their electrical conductivity. In this study, thin films of octa-dodecyloxy copper -phthalocyanine were prepared by Langmuir-Blodgett(LB) method and characterized by using UV/Vis absorption spectroscopy, and ellipsometry. It was found that the proper transfer surface pressure for the film deposition was 25mN/m and the limiting area per molecule was $112\AA$/molecule. The film thickness of one layer was $64\AA$. Current-voltage(I-V) characteristics of these films were investigated as a function of film thickness.

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