한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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The Optimization of Efficient White Organic Light-Emitting Diodes Using a Blue Fluorescent and a Red Phosphorescent Dopant

  • Seo, Ji-Hoon (Dept. of Information Display, Hongik University, Center for Organic Materials and Information Devices, Hongik University) ;
  • Kim, Jun-Ho (Center for Organic Materials and Information Devices, Hongik University, Dept. of Electronic Engineering, Hongik University) ;
  • Seo, Ji-Hyun (Dept. of Information Display, Hongik University, Center for Organic Materials and Information Devices, Hongik University) ;
  • Hyung, Gun-Woo (Dept. of Information Display, Hongik University, Center for Organic Materials and Information Devices, Hongik University) ;
  • Park, Jung-Hyun (Dept. of Information Display, Hongik University, Center for Organic Materials and Information Devices, Hongik University) ;
  • Lee, Kum-Hee (Dept. of Chemistry, Sungkyunkwan University) ;
  • Yoon, Seung-Soo (Dept. of Chemistry, Sungkyunkwan University) ;
  • Kim, Young-Kwan (Dept. of Information Display, Hongik University, Center for Organic Materials and Information Devices, Hongik University)
  • Published : 2007.08.27
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Abstract

We have demonstrated the optimization of white organic light-emitting diodes with two separated emissive layers using a blue fluorescent and a red phosphorescent dopant. The maximum luminous efficiency of the devices showed 7.93, 9.70, 11.8, and 14.3 cd/A. The $CIE_{xy}$ coordinates also showed (x = 0.33, y = 0.36), (x = 0.33, y = 0.35), (x =0.31, y = 0.35), and (x = 0.29, y = 0.36) at 6V, respectively.

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