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

[1] Nearly 100% internal phosphorescence efficiency in an organic light-emitting device [J].

Adachi, C ;

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (10) :5048-5051

[2] Efficient phosphorescent white OLEDs with high color rendering capability [J].

Chang, Chih-Hao ;

Tien, Kun-Cheng ;

Chen, Chung-Chia ;

Lin, Ming-Shiang ;

Cheng, Hsing-Chieh ;

Liu, Su-Hao ;

Wu, Chung-Chih ;

Hung, Jui-Yi ;

Chiu, Yuan-Chieh ;

Chi, Yun .

ORGANIC ELECTRONICS, 2010, 11 (03) :412-418

[3] High-color-rendering pure-white phosphorescent organic light-emitting devices employing only two complementary colors [J].

Chang, Chih-Hao ;

Chen, Chung-Chia ;

Wu, Chung-Chih ;

Chang, Sheng-Yuan ;

Hung, Jui-Yi ;

Chi, Yun .

ORGANIC ELECTRONICS, 2010, 11 (02) :266-272

[4] Efficient phosphorescent white organic light-emitting devices incorporating blue iridium complex and multifunctional orange-red osmium complex [J].

Chang, Chih-Hao ;

Lin, You-Heng ;

Chen, Chung-Chia ;

Chang, Chih-Kai ;

Wu, Chung-Chih ;

Chen, Li-Shiuan ;

Wu, Wen-Wen ;

Chi, Yun .

ORGANIC ELECTRONICS, 2009, 10 (07) :1235-1240

[5] A high-efficiency and low-operating-voltage green electrophosphorescent device employing a pure-hydrocarbon host material [J].

Chi, Liang-Chen ;

Hung, Wen-Yi ;

Chiu, Hao-Chih ;

Wong, Ken-Tsung .

CHEMICAL COMMUNICATIONS, 2009, (26) :3892-3894

[6] High efficiency blue phosphorescent organic light-emitting device [J].

Chopra, Neetu ;

Lee, Jaewon ;

Zheng, Ying ;

Eom, Sang-Hyun ;

Xue, Jiangeng ;

So, Franky .

APPLIED PHYSICS LETTERS, 2008, 93 (14)

[7] A Highly Efficient Universal Bipolar Host for Blue, Green, and Red Phosphorescent OLEDs [J].

Chou, Ho-Hsiu ;

Cheng, Chien-Hong .

ADVANCED MATERIALS, 2010, 22 (22) :2468-+

[8] A novel class of emitting amorphous molecular materials with bipolar character for electroluminescence [J].

Doi, H ;

Kinoshita, M ;

Okumoto, K ;

Shirota, Y .

CHEMISTRY OF MATERIALS, 2003, 15 (05) :1080-1089

[9] New Host Containing Bipolar Carrier Transport Moiety for High-Efficiency Electrophosphorescence at Low Voltages [J].

Gao, Zhi Qiang ;

Luo, Meiming ;

Sun, Xiao Hua ;

Tam, Hoi Lam ;

Wong, Man Shing ;

Mi, Bao Xiu ;

Xia, Ping Fang ;

Cheah, Kok Wai ;

Chen, Chin Hsin .

ADVANCED MATERIALS, 2009, 21 (06) :688-+

[10] Spin-coated highly efficient phosphorescent organic light-emitting diodes based on bipolar triphenylamine-benzimidazole derivatives [J].

Ge, Ziyi ;

Hayakawa, Teruaki ;

Ando, Shinji ;

Ueda, Mitsitru ;

Akiike, Toshiyuki ;

Miyamoto, Hidetoshi ;

Kajita, Toru ;

Kakimoto, Masa-Aki .

ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (04) :584-590

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