Journal of Information Display

The Korean Infomation Display Society (한국정보디스플레이학회)
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Color Variation Improvement by Introducing Double Emission Layers in WPLEDs

  • Kwon, Soon-Kab (Advanced Display Research Center, Kyung Hee University, Department of Information Display, Kyung Hee University) ;
  • Lee, Yong-Kyun (Advanced Display Research Center, Kyung Hee University, Department of Information Display, Kyung Hee University) ;
  • Park, Tae-Jin (Advanced Display Research Center, Kyung Hee University, Department of Information Display, Kyung Hee University) ;
  • Jeong, Su-Hyeon (Advanced Display Research Center, Kyung Hee University, Department of Information Display, Kyung Hee University) ;
  • Jeon, Woo-Sik (Advanced Display Research Center, Kyung Hee University, Department of Information Display, Kyung Hee University) ;
  • Kwon, Jang-Hyuk (Advanced Display Research Center, Kyung Hee University, Department of Information Display, Kyung Hee University) ;
  • Jang, Jin (Advanced Display Research Center, Kyung Hee University, Department of Information Display, Kyung Hee University)
  • Published : 2006.09.24
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Abstract

White polymeric light-emitting devices (WPLEDs) have been fabricated from polyfluorene-based (PFO) blue and MEH-PPV polymer blending systems. A device structure of ITO / PEDOT:PSS / Blending polymer / Blue polymer / LiF / Al was employed. This structure of double emission layers showed significant improvement of white color shift phenomenon. A current efficiency of 4.67 cd/A (3,900 $cd/m^{2}$, 6.4 V) and a brightness value of 17,600 $cd/m^{2}$ at 9.4 V with (0.34, 0.35) CIE coordinates at 5 V and (0.29, 0.29) at 9 V were achieved achieved.

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References

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