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

Sai Wang; Wen-Qing Zhu; Xue Chen; Feng Xu; Hong Xu; Xiao-Wen Zhang; Xi-Feng Li; Xue-Yin Jiang; Zhi-Lin Zhang

doi:10.1117/12.888233

18 February 2011 A green top-emitting organic light-emitting device with single-mode resonance and improved performance by using WO₃ capping layer

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

Author Affiliations +

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 799533 (2011) https://doi.org/10.1117/12.888233
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

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.

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Sai Wang, Wen-Qing Zhu, Xue Chen, Feng Xu, Hong Xu, Xiao-Wen Zhang, Xi-Feng Li, Xue-Yin Jiang, and Zhi-Lin Zhang "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 (18 February 2011); https://doi.org/10.1117/12.888233

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