Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A study on the deposition conditions and physical properties of the Hexadecyl Dipyridinium-$(TCNQ^-)_2$ thin films with Langmuir-Blodgett technique

LB법을 이용한 Hexadecyl Dipyridinium-$(TCNQ^-)_2$의 박막 제작과 물리적 특성 연구

  • Lee, Yong-Soo (Department of Electrical & Control Engineering, Hong-ik University) ;
  • Shin, Dong-Myung (Department of Electrical & Control Engineering, Hong-ik University) ;
  • Kim, Tae-Wan (Department of Physics, Hong-ik University) ;
  • Kang, Dou-Yol (Department of Electrical & Control Engineering, Hong-ik University)
  • 이용수 (홍익대학교 공과대학 전기제어공학과) ;
  • 신동명 (홍익대학교 공과대학 전기제어공학과) ;
  • 김태완 (홍익대학교 물리학과) ;
  • 깅도열 (홍익대학교 공과대학 전기제어공학과)
  • Published : 1996.07.22
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Abstract

Enhancing the electrical conductivity of the ultrathin organic films is one of the important factors for the development of molecular electronic devices. The Langmuir-Blodgett(LB) technique has recently been attracted as out of the ways of deposition ultrathin films. We have studied manufacturing conditions and physical properties of Hexadecyl Dipyridinium-$(TCNQ^-)_2$ LB films made by Kuhn type apparatus. A ${\pi}-A$ isotherm shows that a limiting area is around $180{\AA}^2/molecule$ and a proper surface pressure for a deposition is around 22mN/m. A transfer ratio shows that Hexadecyl Dipyridinium-$(TCNQ^-)_2$ is able to be deposited as an Y-type. UV /visible absorption spectra shows that TCNQ dimer peak is apeared at about 600nm in LB films. In solution, $TCNQ^-$ peak is observed at about 400nm and charge transfer band at $830{\sim}900nm$. A horizontal conductivity of the Hexadecyl Dipyridinium-$(TCNQ^-)_2$ LB film is about $10^{-7}(S/cm)$.

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