Influence of green phosphorescent organic light-emitting devices of host by hole transport layer

  • Yoon, Do-Yeol (Display Components & Material Research Center, Korea Electronics Technology Institute) ;
  • Lee, Chan-Jae (Display Components & Material Research Center, Korea Electronics Technology Institute) ;
  • Moon, Dae-Gyu (Department of Materials Engineering, Soonchunhyang University) ;
  • Lee, Jeong-No (Display Components & Material Research Center, Korea Electronics Technology Institute)
  • Published : 2009.10.12

Abstract

We have investigated the effect of host on the device charactistics of green phosphorescent organic light emitting devices consising of mCP, CBP and TPBi. Electrons were confined within the device by inserting hole transport layer between the electro transport and the emitting layer. When the appropriate interlayers were added, the device with TPBI host layer performances were found to be dramatically enhanced, with current efficiency and lifetime of 18cd/A and 18hour.

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