한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Color-stabilized organic light-emitting devices by using N, N'-bis-(1- naphthyl)-N, N'-diphenyl-1,1-biphenyl-4,4'-diamine/5,6,11,12 - tetraphenylnaphthacene multiple quantum well structures

  • Yoon, Y.B. (Advanced Semiconductor Research Center, Department of Electronics and Computer Engineering, Hanyang) ;
  • Kim, T.W. (Advanced Semiconductor Research Center, Department of Electronics and Computer Engineering, Hanyang) ;
  • Yang, H.W. (Department of Information and Communications, Hanyang University) ;
  • Lee, H.G. (Department of Information Display Engineering & COMID, Hong-ik University) ;
  • Kim, J.H. (Department of Information Electronic Engineering, Hong-ik University) ;
  • Kim, Y.G. (Department of Chemical Engineering, Hong-ik University)
  • Published : 2005.07.19
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Abstract

The efficiency and the optical properties of the yellow organic light-emitting devices (OLEDs) were significantly affected by the existence of the multiple quantum well (MQW) structures consisting of N, N'- bis-(1-naphthyl)-N, N'-diphenyl-1,1-biphenyl-4,4'- diamine(NPB)/5,6,11,12 - tetraphenylnaphthacene (rubrene). The maximum efficiency and the luminance of OLEDs with 3-periods of the NPB/rubrene MQWs at 41.6 $mA/cm^2$ were 3.66 cd/A and 1524 $cd/m^2$, respectively, and their Commission Internationale de l'Eclairage chromaticity coordinates were (0.34, 0.55), which indicates a yellow color. These results indicate that the efficiencies of the OLEDs by using MQW emitting layers can be improved.

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