A Simple Carbazole/Oxadiazole Hybrid Molecule: An Excellent Bipolar Host for Green and Red Phosphorescent OLEDs

被引：438

作者：

Tao, Youtian ^{[1
]}

Wang, Qiang ^{[2
]}

Yang, Chuluo ^{[1
]}

Wang, Qi ^{[2
]}

Zhang, Zhiqiang ^{[2
]}

Zou, Taotao ^{[1
]}

Qin, Jingui ^{[1
]}

Ma, Dongge ^{[2
]}

机构：

[1] Wuhan Univ, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 42期

基金：

中国国家自然科学基金;

关键词：

charge carrier injection; electron transport; electrophosphorescence; hole transport; light-emitting diodes;

D O I：

10.1002/anie.200803396

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Graph Presented) An enhanced performance: Electroluminescent devices incorporating a simple carbazole/oxadiazole hybrid as a host for dopants show maximum external quantum efficiencies (ηEQE) as high as 20.2% for green and 18.5% for deep red electrophosphorescence (see picture, J = current density). The host can be conveniently prepared and has good thermal and morphological stabilities and a high triplet energy level. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：8104 / 8107

页数：4

共 28 条

[1] High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials [J].

Adachi, C ;

Baldo, MA ;

Forrest, SR ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2000, 77 (06) :904-906

[2] Study of organic light emitting devices with a 5,6,11,12-tetraphenylnaphthacene (rubrene)-doped hole transport layer [J].

Aziz, H ;

Popovic, ZD .

APPLIED PHYSICS LETTERS, 2002, 80 (12) :2180-2182

[3] Very high-efficiency green organic light-emitting devices based on electrophosphorescence [J].

Baldo, MA ;

Lamansky, S ;

Burrows, PE ;

Thompson, ME ;

Forrest, SR .

APPLIED PHYSICS LETTERS, 1999, 75 (01) :4-6

[4] Carbazole compounds as host materials for triplet emitters in organic light-emitting diodes:: Tuning the HOMO level without influencing the triplet energy in small molecules [J].

Brunner, K ;

van Dijken, A ;

Börner, H ;

Bastiaansen, JJAM ;

Kiggen, NMM ;

Langeveld, BMW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (19) :6035-6042

[5] High triplet energy polymer as host for electrophosphorescence with high efficiency [J].

Chen, Yen-Chun ;

Huang, Guo-Sheng ;

Hsiao, Chung-Chin ;

Chen, Show-An .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (26) :8549-8558

[6] High efficiency and small roll-off electrophosphorescence from a new iridium complex with well-matched energy levels [J].

Gao, Zhi Qiang ;

Mi, Bao Xiu ;

Tam, Hoi Lam ;

Cheah, Kok Wai ;

Chen, Chin Hsin ;

Wong, Man Shing ;

Lee, Shuit Tong ;

Lee, Chun Sing .

ADVANCED MATERIALS, 2008, 20 (04) :774-+

[7] Solution-processible bipolar triphenylamine-benzimidazole derivatives for highly efficient single-layer organic light-emitting diodes [J].

Ge, Ziyi ;

Hayakawa, Teruaki ;

Ando, Shinji ;

Ueda, Mitsuru ;

Akiike, Toshiyuki ;

Miyamoto, Hidetoshi ;

Kajita, Toru ;

Kakimoto, Masa-Aki .

CHEMISTRY OF MATERIALS, 2008, 20 (07) :2532-2537

[8] 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

[9] Novel bipolar bathophenanthroline containing hosts for highly efficient phosphorescent OLEDs [J].

Ge, Ziyi ;

Hayakawa, Teruaki ;

Ando, Shinji ;

Ueda, Mitsuru ;

Akiike, Toshiyuki ;

Miyamoto, Hidetoshi ;

Kajita, Toru ;

Kakimoto, Masa-aki .

ORGANIC LETTERS, 2008, 10 (03) :421-424

[10] High-performance blue electroluminescent devices based on 2-(4-biphenylyl)-5-(4-carbazole-9-yl)phenyl-1,3,4-oxadiazole [J].

Guan, M ;

Bian, ZQ ;

Zhou, YF ;

Li, FY ;

Li, ZJ ;

Huang, CH .

CHEMICAL COMMUNICATIONS, 2003, (21) :2708-2709

← 1 2 3 →