한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

High efficiency multiple quantum well device structure in red phosphorescent OLEDs

  • Park, Tae-Jin (Department of Information Display, Kyung Hee University) ;
  • Jeon, Woo-Sik (Department of Information Display, Kyung Hee University) ;
  • Jang, Jin (Department of Information Display, Kyung Hee University) ;
  • Pode, Ramchandra (Department of Physics, Kyung Hee University) ;
  • Kwon, Jang-Hyuk (Department of Information Display, Kyung Hee University)
  • Published : 2009.10.12
Download PDF
⟨ Previous Next ⟩

Abstract

We report the multiple quantum well (MQW) structure for highly efficient red phosphorescent OLEDs. Various triplet quantum well devices from a single well to five quantum wells are realized using a wide band-gap hole and electron transporting layers, narrow band-gap host and dopant material, and charge control layers (CCL). The maximum external quantum efficiency of 14.8 % with a two quantum well device structure is obtained, which is the highest value among the red phosphorescent OLEDs using same dopant.

Keywords