Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A study on the electrical and magnetic properties of Viologen-TCNQ(2:2) LB films

Viologen-TCNQ(2:2) LB막의 전기 및 자기적 특성에 관한 연구

  • 이용수 (홍익대학교 전자전기공학부) ;
  • 신동명 (홍익대학교 화학공학과) ;
  • 김태완 (홍익대학교 물리학과) ;
  • 강도열 (홍익대학교 전자전기공학부)
  • Published : 1996.11.01
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Abstract

In conducting systems based on LB films, TCNQ derivatives have been extensively studied as electron acceptor molecules. We have investigated the optical, electrical, and magnetic properties of Viologen-(TCNQ￣)$_2$LB films. In UV/visible absorption measurements, we have observed TCNQ￣ peak at 380 nm and dimer peak at 620 nm. The electron spin resonance measurements infer that Viologen-(TCNQ￣)$_2$LB film exhibits anisotropic properly. In other words, the LB film shows angular dependence. Iodine doping affects the degree of charge transfer and the conductivity of the films. The UV/visible absorption spectra of the LB film doped with I$_2$show peaks at near 400~430 nm and there is no dimer absorption peak. The in-plane electrical conductivity of the undoped film is approximately 4.2$\times$10$^{-6}$ S/cm.

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