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Improvement of Efficiency Varying Ratio in Hybrid White OLED

도핑 비율에 따른 하이브리드 백색 OLED의 효율 향상에 관한 연구

  • Kim, Nam-Kyu (Department of Nano Engineering, Dong-A University) ;
  • Shin, Hoon-Kyu (National Institute for Nanomaterials Technology, Pohang University of Science and Technology) ;
  • Kwon, Young-Soo (Department of Nano Engineering, Dong-A University)
  • 김남규 (동아대학교 나노공학과) ;
  • 신훈규 (포항공과대학교 나노융합기술원) ;
  • 권영수 (동아대학교 나노공학과)
  • Received : 2014.07.07
  • Accepted : 2014.07.24
  • Published : 2014.09.01

Abstract

We synthesized new materials of $Zn(HPB)_2$ and Ir-complexes as blue or red emitting material. We fabricated white Organic Light Emitting Diodes (OLED) by using $Zn(HPB)_2$ for the blue emitting layer, Ir-complexes for the red emitting layer and $Alq_3$ for the green emitting layer. We fabricated white OLED by using double emitting layers of $Zn(HPB)_2$:Ir-complexes and $Alq_3$. The doping rate of Ir-complexes was varied, such as 0.2%, 0.4%, 0.6%, and 0.8%, respectively. When the doping rate of $Zn(HPB)_2$:Ir-complexes was 0.6%, white emission was achieved. The Commission Internationale de l'Eclairage (CIE) coordinates of the white emission was (0.322, 0.312).

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