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Efficient Green Phosphorescent Polymer Light-emitting Diodes Based on Cyclometalated Iridium Complex

Efficient Green Phosphorescent Polymer Light-emitting Diodes Based on Cyclometalated Iridium Complex

Authors :
邓先平 Deng Xian-ping
骆开均 Luo Kai-jun
王欣 Wang Xin
朱卫国 Zhu Wei-guo
蒋世平 Jiang Shi-ping
赵可清 Zhao Keqing
谢运 Xie Yun
Source :
Chinese Journal of Luminescence. 32:368-373
Publication Year :
2011
Publisher :
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 2011.

Abstract

A novel iridium complex with sterically bulky camphor-derives group as β-diketonate,i.e.,(2-phenylpyridinato-N,C2′) irdium(Ⅲ)(3-acetyl-camphor) [Ir(ppy)2(acam)],was synthesized and it was characterized by 1H NMR,ESI-MS,and elementary analysis.This complex exhibited a higher phototoluminescence quantum efficiency(0.54) than(2-phenylpyridinato-N,C2′) irdium(Ⅲ)(acetylacetonate) [Ir(ppy)2(acac)](0.34) in 2-methyl-tetrahydrofuran solution.Efficient green phosphorescent polymer light-emitting diodes using Ir(ppy)2(acam) as dopants showed high efficiencies and stable EL spectra,with maximum current efficiency of 15.1 cd/A,maximum power efficiency of 4.23 lm/W and maximum brightness of 9 939 cd/m2 at doping mass fraction of 1%.

Details

ISSN :
10007032
Volume :
32
Database :
OpenAIRE
Journal :
Chinese Journal of Luminescence
Accession number :
edsair.doi...........3645fa3dd67f56311ed42567ccb61528
Full Text :
https://doi.org/10.3788/fgxb20113204.0368