Extremely low doping technology in phosphorescent OLEDs

  • Jeon, Woo-Sik (Department of Information Display, Kyung Hee University) ;
  • Park, Tae-Jin (Department of Information Display, Kyung Hee University) ;
  • Kim, Sun-Young (Department of Information Display, Kyung Hee University) ;
  • Pode, Ramchandra (Department of Physics, Kyung Hee University) ;
  • Jang, Jin (Department of Information Display, Kyung Hee University) ;
  • Kwon, Jang-Hyuk (Department of Information Display, Kyung Hee University)
  • Published : 2008.10.13

Abstract

We report extremely low doping technology in phosphorescent organic light emitting diodes(PHOLEDs). Highly efficient red PHOLEDs with excellent energy transfer characteristics even under 1 % doping condition have been demonstrated. Results reveal efficient host-dopant system to realize highly efficient PHOLEDs and useful cost saving way by reduction of expensive Ir complex dopants.

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