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Efficient and low-voltage phosphorescent organic light-emitting devices based on blue iridium complex host

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Abstract

By adopting a phosphorescent host/guest system consisting of blue iridium complex as host and a series of phosphorescent dyes as guest, efficient and low-voltage monochromic organic light-emitting devices(OLEDs) were fabricated. The devices with blue iridium host have higher power efficiency than the device with the conventional host 4,4′-N,N′-dicarbazole-biphenyl. The enhancement of the maximum power efficiency in green phosphorescent device can reach 37.2%. Dichromatic white OLED could be achieved by simply adjusting the concentration of the orange dyes. At a brightness of 1000 cd/m2, the power efficiency of the white device is 8.4 lm/W with a color rendering index of 76.

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Authors and Affiliations

  1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, P. R. China

    Jing Yu, Yongming Yin, Wenfa Xie & Letian Zhang

Authors
  1. Jing Yu
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  2. Yongming Yin
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  3. Wenfa Xie
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  4. Letian Zhang
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Corresponding author

Correspondence to Letian Zhang.

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Supported by the National Natural Science Foundation of China(Nos.61474054, 61475060, 61177026)

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Yu, J., Yin, Y., Xie, W. et al. Efficient and low-voltage phosphorescent organic light-emitting devices based on blue iridium complex host. Chem. Res. Chin. Univ. 31, 569–572 (2015). https://doi.org/10.1007/s40242-015-5243-7

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  • DOI: https://doi.org/10.1007/s40242-015-5243-7

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