한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Efficient and color stable phosphorescent White Organic light emitting devices using ultra wide band gap host materials

  • Lee, Jong-Hee (Convergence Components & Materials Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Lee, Jeong-Ik (Convergence Components & Materials Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Song, Ki-Im (Convergence Components & Materials Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Lee, Su-Jin (Convergence Components & Materials Research Laboratory, Electronics and Telecommunications Research Institute) ;
  • Chu, Hye-Yong (Convergence Components & Materials Research Laboratory, Electronics and Telecommunications Research Institute)
  • Published : 2008.10.13
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Abstract

We developed phosphorescent white OLEDs with high efficiency and color stability. By engineering device architecture in which confined excitons within the emissive layer by using adequate interlayer and balanced recombination of charge carriers by using stepwise hole transporting layer system, these WOLEDs showed power efficacy of 43.6 lm/W with CRI = 62 and 36 lm/W with CRI = 72 at $100\;cd/m^2$ without outcoupling enhancements.

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