Characterization of Organic Light-Emitting Diode (OLED) with Dual Emission using Al:Au Cathode

Al:Au 음극층을 이용한 양면발광(dual emission) 유기 EL 소자의 Al 두께별 특성 평가

  • 이수환 (한양대학교 나노SOI 공정연구실) ;
  • 김달호 (한양대학교 나노SOI 공정연구실) ;
  • 양희두 (한양대학교 나노SOI 공정연구실) ;
  • 김지헌 (한양대학교 나노SOI 공정연구실) ;
  • 이곤섭 (한양대학교 나노SOI 공정연구실) ;
  • 박재근 (한양대학교 전자통신 컴퓨터 공학부)
  • Published : 2008.03.31

Abstract

The Al:Au double-layer metal electrode for use in transparent, dual emission of organic light-emitting diode (OLED) was fabricated. The electrode of Al:Au metals with various thicknesses was deposited by the vacuum thermal evaporation technique. For Al thickness of 1 nm, a bottom luminance of $4880\;cd/m^2$ was observed at 8 V. Otherwise, top luminance of $2020\;cd/m^2$ were observed at 8 V. In addition, the threshold voltages of the electrodes were 2.2 V. It was forward that the inserting 1 nm Al between LiF and Au enhanced electron injection with tunneling effect.

Keywords