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 Optical and Electrical Properties of the White-light-emitting Organic LED with Two-wavelength using DPVBi/Rubrene Structure

DPVBi/Rubrene 구조를 사용한 2-파장 방식의 백색유기발광소자의 광학적ㆍ전기적 특성에 관한 연구

  • 오환술 (건국대학교 전자공학부) ;
  • 조재영 (건국대학교 전자공학부) ;
  • 최성진 (건국대학교 전자공학부) ;
  • 강명구 (극동정보대학 정보통신과) ;
  • 윤석범 (공주대학교 광응용과학)
  • Published : 2004.02.01
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Abstract

The white-light-emitting organic LED(OLED) with two-wavelength was fabricated using the DPVBi of blue emitting material 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/Rubrene/BCP(100$\AA$)/Alq$_3$(150$\AA$)/Al(600$\AA$). We analyzed the fabricated device through the changes of the DPVBi and Rubrene layer's thickness. We obtained the white-light-emitting OLED with white color light and the CIE coordinate of the device was (0.29, 0.33) at applied voltage of 13V when the thickness of DPVBi layer was 210$\AA$ and the thickness of Rubrene layer was 180$\AA$. At a current of 100㎃/$\textrm{cm}^2$, the quantum efficiency was 0.35％ and at a voltage of 20V, it was 0.405％.

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