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A high-performance tandem white organic light-emitting diode combining highly effective white-units and their interconnection layer

J. Appl. Phys. 105, 076101 (2009); doi:10.1063/1.3106051

Published 6 April 2009

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Qi Wang, Junqiao Ding, Zhiqiang Zhang, Dongge Ma, Yanxiang Cheng, Lixiang Wang, and Fosong Wang
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
By utilizing 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline:Li/MoO3 as an effective charge generation layer (CGL), we extend our recently demonstrated single-emitting-layer white organic light-emitting diode (WOLED) to realize an extremely high-efficiency tandem WOLED. This stacked device achieves maximum forward viewing current efficiency of 110.9 cd/A and external quantum efficiency of 43.3% at 1  µA/cm2 and emits stable white light with Commission Internationale de L'Eclairage coordinates of (0.34, 0.41) at 16 V. It is noted that the combination of effective single units and CGL is key prerequisite for realizing high-performance tandem WOLEDs. ©2009 American Institute of Physics
History: Received 26 November 2008; accepted 20 February 2009; published 6 April 2009
Permalink: http://link.aip.org/link/?JAPIAU/105/076101/1
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KEYWORDS and PACS

Keywords
PACS
  • 85.60.Jb
    Light-emitting devices
  • YEAR: 2009

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ISSN:
0021-8979 (print)   1089-7550 (online)
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