Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Study on the Luminous Properties of the White-light-emitting Organic LED with Two-wavelength using DPVBi/Alg3:Rubrene Structure

DPVBi/Alg3:Rubrene 구조를 사용한 2-파장 방식의 백색유기발광소자의 발광특성에 관한 연구

  • 조재영 (건국대학교 전자·정보통신공학과) ;
  • 최성진 (건국대학교 전자·정보통신공학과) ;
  • 윤석범 (공주대학교 광응용과학전공) ;
  • 오환술 (건국대학교 전자·정보통신공학과)
  • Published : 2003.07.01
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Abstract

The white-light-emitting organic LED with two-wavelength was fabricated using blue emitting material(DPVBi) and a series of orange color fluorescent dye(Rubrene) by vacuum evaporation processes. The basic structure of white-light-emitting OLED was ITO/NPB(150$\AA$)/DPVBi(150$\AA$)/Alq$_3$:Rubrene(150$\AA$)/BCP(100$\AA$)/Alq$_3$(150$\AA$)/Al(600$\AA$). The changes of the CIE coordiante strongly depended on the doping concentration of Rubrene and the thickness of NPB layer. We obtained the white-light-emitting OLED close to the pure white color light and the CIE coordinate of the device was (0.315, 0.330) at applied voltage of 13V when the doping concentration of Rubrene was 0.5wt% and the thickness of NPB layer is 200$\AA$. At a current of 100mA/$\textrm{cm}^2$, the quantum efficiency was 0.35%.

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