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Proceedings Paper

Comparison of two methods of improving the characteristics of a double-color white organic light-emitting diode
Author(s): Xue Chen; Wen-Qing Zhu; Sai Wang; Feng Xu; Hong Xu; Xiao-Wen Zhang; Xi-Feng Li; Xue-Yin Jiang; Zhi-Lin Zhang
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Paper Abstract

White organic light-emitting diode was realized by co-doping a blue dye p-di(p-N,N-diphenyl-amino-styryl)benzene(DSA-ph) and a red dye 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran(DCJTB) into a blue host 2-(t-butyl)-9,10-di(2-naphthyl)anthracene(TBADN), achieving a brightness of 11580 cd/m2 at 200 mA/cm2, and a maximum current efficiency of 7.53 cd/A. The improvement was due to efficiency energy transfer from host to guest by the aid of assistant energy transfer mechanism. The device introduced a (4,4'-N,N'-dicarbazole)biphenyl/4,4'-bis(N-carbazolyl)biphenyl(CBP) interlayer between separate double emissive layers with the same materials showed improved color stability, due to the blocking effect of the CBP layer, which contributed to stable and even exciton distribution in both blue and red emission layer.

Paper Details

Date Published: 18 February 2011
PDF: 4 pages
Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 79952F (18 February 2011); doi: 10.1117/12.888395
Show Author Affiliations
Xue Chen, Shanghai Univ. (China)
Wen-Qing Zhu, Shanghai Univ. (China)
Sai Wang, Shanghai Univ. (China)
Feng Xu, Shanghai Univ. (China)
Hong Xu, Shanghai Univ. (China)
Xiao-Wen Zhang, Shanghai Univ. (China)
Xi-Feng Li, Shanghai Univ. (China)
Xue-Yin Jiang, Shanghai Univ. (China)
Zhi-Lin Zhang, Shanghai Univ. (China)

Published in SPIE Proceedings Vol. 7995:
Seventh International Conference on Thin Film Physics and Applications
Junhao Chu; Zhanshan Wang, Editor(s)

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