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Issue 3, 2012
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A diarylborane-substituted carbazole as a universal bipolar host material for highly efficient electrophosphorescence devices

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Abstract

Recently bipolar phosphorescent host materials have attracted wide attention since they can achieve better charge balance and hence better device performance. In this work, we report the synthesis and physical properties of a novel bipolar host material containing the dimesityl borane/carbazole hybrid, CMesB. With a high triplet energy, CMesB is considered a promising universal host material and has been applied to phosphorescent OLEDs of various colors. Red/green/blue/white (RGBW) OLEDs based on CMesB all show high external quantum efficiencies (20.7% for red, 20.0% for green, 16.5% for blue, and 15.7% for white) at practical brightnesses. The results indicate that the bipolar host CMesB with high triplet energy has high potential in manufacturing RGBW OLEDs for display or lighting applications.

Graphical abstract: A diarylborane-substituted carbazole as a universal bipolar host material for highly efficient electrophosphorescence devices

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Publication details

The article was received on 15 Jul 2011, accepted on 30 Sep 2011 and first published on 11 Nov 2011


Article type: Paper
DOI: 10.1039/C1JM13323C
Citation: J. Mater. Chem., 2012,22, 870-876
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    A diarylborane-substituted carbazole as a universal bipolar host material for highly efficient electrophosphorescence devices

    M. Lin, L. Chi, H. Chang, Y. Huang, K. Tien, C. Chen, C. Chang, C. Wu, A. Chaskar, S. Chou, H. Ting, K. Wong, Y. Liu and Y. Chi, J. Mater. Chem., 2012, 22, 870
    DOI: 10.1039/C1JM13323C

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