Effect of Phosphorescent Sensitizer on White Organic Light-Emitting Devices
CHENG Gang1 , QIU Song2 , ZHAO Yi1 , MA Yu-Guang2 , LIU Shi-Yong1
1 National Laboratory of Integrated Optoelectronics, Jilin University, Changchun 130023
2 Key Laboratory of Superamolecular Structure and Material, Jilin University, Changchun 130023
Effect of Phosphorescent Sensitizer on White Organic Light-Emitting Devices
CHENG Gang1 ;QIU Song2 ;ZHAO Yi1 ;MA Yu-Guang2 ;LIU Shi-Yong1
1 National Laboratory of Integrated Optoelectronics, Jilin University, Changchun 130023
2 Key Laboratory of Superamolecular Structure and Material, Jilin University, Changchun 130023
关键词 ：
78.60.Fi ,
78.66.Qn ,
85.60.Jb
Abstract ： We have fabricated high-efficiency white organic light-emitting devices by using the phosphorescent material fac tris (2-phenylpyridine) iridium [Ir(ppy3 )] as a sensitizer. Ir(ppy)3 and the fluorescent dye 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9 enyl) (DCJTB) are co-doped into 4,4'-N,N'-dicarbazole-biphenyl (CBP) host. N,N'-diphenyl-N,N'-bis(1-naphthyl)-(1,1'-biphenyl)-4,4'-diamine (NPB) acts as a blue light-emitting as well as hole-transporting layer. The chromaticity of white emission can be tuned by adjusting the concentration of Ir(ppy)3 and DCJTB. The maximum efficiency and luminance of the device with 3-wt.% Ir(ppy)3 and 2-wt.% DCJTB are 7.5 cd A-1 and 12020 cd m-2 , respectively, which produces fairly pure white emission with the commission international De L'Eclairage coordinates of (0.33, 0.32) at 10 V.
Key words ：
78.60.Fi
78.66.Qn
85.60.Jb
出版日期: 2003-09-01
引用本文:
CHENG Gang;QIU Song;ZHAO Yi;MA Yu-Guang;LIU Shi-Yong. Effect of Phosphorescent Sensitizer on White Organic Light-Emitting Devices[J]. 中国物理快报, 2003, 20(9): 1607-1609.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I9/1607
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2003, Vol. 20 
