Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Significant Improvements in White OLED Color Purity by Doping Ratio of $(POB)_{2}Ir(pic)$

$(POB)_{2}Ir(pic)$의 doping 비율에 따른 White OLED의 색순도 향상에 관한 연구

  • Kim, Dong-Eun (Department of Electrical Engineering & NTRC, Dong-A University) ;
  • Kim, Byoung-Sang (Department of Electrical Engineering & NTRC, Dong-A University) ;
  • Park, Jae-Chu (Internet & Electronic Info-Communication, Yeungjin College) ;
  • Chang, Jeong-Soo (Department of Electrical Engineering, Kyungil, University) ;
  • Kwon, Young-Soo (Department of Electrical Engineering & NTRC, Dong-A University)
  • 김동은 (동아대학교 전기공학과) ;
  • 김병상 (동아대학교 전기공학과) ;
  • 박재철 (영진전문대학 인터넷전자정보계열) ;
  • 장정수 (경일대학교 전기공학과) ;
  • 권영수 (동아대학교 전기공학과)
  • Published : 2007.07.18
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Abstract

We has been synthesized $(POB)_{2}Ir(pic)$ as a red emitting materials and evaluated in the organic light emitting diodes (OLED). The layer of $Alq_3$ doped with $(POB)_{2}Ir(pic)$ as emitters has been demonstrated. The structure of the device is ITO/ NPB (40 nm) / $Zn(HPB)_2$ (40 nm)/ $Alq_3$ : $(POB)_{2}Ir(pic)$ (30 nm) / LiF / Al. We varied the doped rate of $(POB)_{2}Ir(pic)$. The doped rate is 0.4 %, 0.6%, 0.8 and 1.2%, respectively. When the doped rate of the $Alq_3$:$ Ir(POB)_{2}(pic)$ was 0.6%, white emission is achieved. The Commission Internationale de l'Eclairage (CIE) coordinates of the white emission are (0.316, 0.331) at an applied voltage of 10.75V.

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