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

被引：92

作者：

Lin, Ming-Shiang ^{[1
]}

Chi, Liang-Chen ^{[2
]}

Chang, Hong-Wei ^{[1
]}

Huang, Yi-Hsiang ^{[1
]}

Tien, Kun-Cheng ^{[1
]}

Chen, Chung-Chia ^{[1
]}

Chang, Chih-Hao ^{[1
]}

Wu, Chung-Chih ^{[1
]}

Chaskar, Atul ^{[2
]}

Chou, Shu-Hua ^{[2
]}

Ting, Hao-Chun ^{[2
]}

Wong, Ken-Tsung ^{[2
]}

Liu, Yi-Hong ^{[2
]}

Chi, Yun ^{[3
]}

机构：

[1] Natl Taiwan Univ, Grad Inst Elect Engn, Grad Inst Photon & Optoelect, Dept Elect Engn, Taipei 10617, Taiwan

[2] Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan

[3] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 03期

关键词：

LIGHT-EMITTING-DIODES; AMORPHOUS MOLECULAR MATERIALS; RED PHOSPHORESCENT OLEDS; EMISSIVE ORGANIC-SOLIDS; HIGH-ELECTRON-MOBILITY; QUANTUM EFFICIENCY; BLUE; TRANSPORT; CARRIER; ELECTROLUMINESCENCE;

D O I：

10.1039/c1jm13323c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：870 / 876

页数：7

共 46 条

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