Carbon Nanotube Incoporated Conductive Pastes

탄소나노튜브를 이용한 전도성 페이스트

  • 오영석 (성균관대학교 성균나노과학기술원(SAINT)) ;
  • 서대우 (성균관대학교 성균나노과학기술원(SAINT), 기계공학부) ;
  • 김영진 (성균관대학교 성균나노과학기술원(SAINT), 기계공학부) ;
  • 최재붕 (성균관대학교 기계공학부) ;
  • 백승현 (성균관대학교 성균나노과학기술원(SAINT), 기계공학부)
  • Published : 2008.11.05

Abstract

Conductive polymers, prepared by mixing electrically conductive fillers with a suitable polymeric formulation, are widely used in applications such as interconnecting materials for high density electronic packaging. However, resins of conductive pastes used as binders and vehicles are generally nonconductive, so that they may prevent the electrical contact between conductive fillers and reduce electron transmission. In this study, we improved conductivity of silver paste by the incorporation of cabon nanotubes. It is important to achieve homogeneous dispersion of CNTs to act as reinforcements efficiently in matrix. We carried out acid treatment on nanotubes for their homogeneous dispersion in silver/conducting polymer matrix. The dispersion states of nanotubes were characterized by raman spectra and filed emission scanning electron microscope. The electrical resistivity of CNTs incorporated silver paste was also measured by 4-point probe method.

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