A study on the physical characteristics and conductivities of $\alpha$ -Sexithienyl thin films with various deposition conditions

성막조건에 따른 $\alpha$-Sexithienyl 박막의 물리적 특성 및 전기전도도에 관한 연구

  • 박용인 (홍익대학교 전자전기공학부) ;
  • 권오관 (홍익대학교 화학공학과) ;
  • 오세운 (홍익대학교 전자전기공학부) ;
  • 최종선 (홍익대학교 전자전기공학부) ;
  • 김영관 (홍익대학교 화학공학과) ;
  • 신동명 (홍익대학교 화학공학과) ;
  • 강도열 (홍익대학교 전자전기공학부)
  • Published : 1997.04.01

Abstract

$\alpha$-sexithienyl($\alpha$-6T) thin films were deposited by Organic Molecular Beam Deposition(OMBD) technique, where the $\alpha$-6T was synthesized and purified by the sublimation method. The thin films of the $\alpha$-6T were deposited under various deposition conditions. The effects of deposition rate, substrate temperature. and vacuum pressure an the formation of these films have been studied. The molecular orientations of $\alpha$-6T films were investigated with the polarized electronic absorption spectroscopy. The molecules in the $\alpha$-6T film deposited at a low deposition rate under a high vacuum were aligned almost perpendicular to the substrate. The film deposited at an elevated substrate temperature (~9 $O^{\circ}C$) showed higher conductivity than the film deposited at room temperature.

Keywords