Improvement In recombination at a two-emission-layers interface For White-light-emitting organic electroluminescent device

  • Song, Tae-Joon (The Sungkyunkwan University, Department of Chemical Engineering) ;
  • Ko, Myung-Soo (The Sungkyunkwan University, Department of Chemical Engineering) ;
  • Lee, Gyu-Chul (The Sungkyunkwan University, Department of Chemical Engineering) ;
  • Cho, Sung-Min (The Sungkyunkwan University, Department of Chemical Engineering)
  • Published : 2003.07.09

Abstract

In order to realize full color display, two approaches were used. The first method is the patterning of red, green, and blue emitters using a selective deposition. Another approach is based on a white-emitting diode, from which the three primary colors could be obtained by micro-patterned color filters. White-light-emitting organic light emitting devices (OLEDs) are attracting much attention recently due to potential applications such as backlights in liquid crystal displays (LCDs) or other illumination purposes. In order for the white OLEDs to be used as backlights in LCDs, the light emission should be bright and have Commission Internationale d'Eclairage (CIE) chromaticity coordinates of (0.33, 0.33). For obtaining white emission from OLEDs, different colours should be mixed with proper balances even though there are a few different methods for mixing colors. In this study, we will report a white organic electroluminescent device using exciton diffusion length concept.

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