한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

Improved EL efficiency and operational lifetime of top-emitting white OLED with a co-doping technology

  • Lee, Meng-Ting (Material and Chemical Laboratories, Industrial Technology Research Institute (ITRI)) ;
  • Tseng, Mei-Rurng (Material and Chemical Laboratories, Industrial Technology Research Institute (ITRI))
  • Published : 2007.08.27
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Abstract

We have developed a top-emitting white organic electroluminescent device (TWOLED) incorporating a low-reflectivity molybdenum (Mo) anode and doped transport layers as well as a dual-layer architecture of doped blue and yellow emitters with the same blue host. The EL efficiency and operational lifetime of TWOLED can be enhanced by a factor of 1.2 and 3.4 than that of standard TWOLED, respectively, with a co-doping technology in yellow emitter by doping another blue dopant. The enhancement in device performances can be attributed to improve the energy transfer efficiency from blue host to yellow dopant through a blue dopant as medium in yellow emitter.

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