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Proceedings Article

A green top-emitting organic light-emitting device with single-mode resonance and improved performance by using WO3 capping layer

[+] Author Affiliations
Sai Wang, Wen-Qing Zhu, Xue Chen, Feng Xu, Hong Xu, Xiao-Wen Zhang, Xi-Feng Li, Xue-Yin Jiang, Zhi-Lin Zhang

Shanghai Univ. (China)

Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 799533 (February 17, 2011); doi:10.1117/12.888233
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From Conference Volume 7995

  • Seventh International Conference on Thin Film Physics and Applications
  • Junhao Chu; Zhanshan Wang
  • Shanghai, China | September 24, 2010

abstract

A top-emitting organic light-emitting device (TOLED) with an architecture of Ag/Wo3/4,4'-bis[N -(1-naphthyl-1)-N-phenyl-amino]-biphenyl/tris-(8-hydroxyquinoline)aluminium(Alq3)/LiF/Al/semitransparent Ag/Capping layer 20~40nm WO3 as capping layer has been investigated and WO3 was demonstrated to be an effective capping layer and improve the luminance by a factor of 1.7 between the maximum and minimum transmittance of top contact. In this paper, the thicknesses of organic layers are calculated based on Fabry-Perot cavity theory. And with optimized, the top -emitting organic devices with single-mode resonance have a good ability such as a brightness of 40920cd/m2 at the current density of 600ma/cm2 and a maximum luminous efficiency of 7.32cd/A at 9145cd/m2.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Sai Wang ; Wen-Qing Zhu ; Xue Chen ; Feng Xu ; Hong Xu, et al.
"A green top-emitting organic light-emitting device with single-mode resonance and improved performance by using WO3 capping layer", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 799533 (February 17, 2011); doi:10.1117/12.888233; http://dx.doi.org/10.1117/12.888233


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