Blue-emitting heteroleptic iridium(III) complexes suitable for high-efficiency phosphorescent OLEDs

被引：416

作者：

Yang, Cheng-Han

Cheng, Yi-Ming

Chi, Yun ^{[1
]}

Hsu, Chia-Jung

Fang, Fu-Chuan

Wong, Ken-Tsung

Chou, Pi-Tai

Chang, Chih-Hao

Tsai, Ming-Han

Wu, Chung-Chih

机构：

[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan

[2] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[3] Natl Tsing Hua Univ, Dept Elect Engn, Hsinchu 300, Taiwan

[4] Natl Tsing Hua Univ, Grad Inst Electroopt Engn, Hsinchu 300, Taiwan

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2007年 / 46卷 / 14期

关键词：

chelate ligands; density functional calculations; iridium; luminescence; N ligands;

D O I：

10.1002/anie.200604733

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Dyed-in-the-wool true blue: True-blue phosphorescent organic light-emitting diodes are fabricated by using an IrIII dopant (see picture; gray C; blue N; red Ir; green F). The Ir complex has an enhanced metal-to-ligand charge-transfer contribution, hence a shortened radiative lifetime in the excited state. The maximum external quantum efficiency of the fabricated device is 8.5% and the main emission is around 450 nm. (Figure Presented). © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

收藏

页码：2418 / 2421

页数：4

相关论文

共 30 条

[1] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

[2] Phosphorescent dyes for organic light-emitting diodes [J].

Chou, Pi-Tai ;

Chi, Yun .

CHEMISTRY-A EUROPEAN JOURNAL, 2007, 13 (02) :380-395

[3] Osmium- and ruthenium-based phosphorescent materials: Design, photophysics, and utilization in OLED fabrication [J].

Chou, Pi-Tai ;

Chi, Yun .

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2006, 17 (17) :3319-3332

[4] Tuning iridium(III) phenylpyridine complexes in the "almost blue" region [J].

Coppo, P ;

Plummer, EA ;

De Cola, L .

CHEMICAL COMMUNICATIONS, 2004, (15) :1774-1775

[5] New trends in the use of transition metal-ligand complexes for applications in electroluminescent devices [J].

Holder, E ;

Langeveld, BMW ;

Schubert, US .

ADVANCED MATERIALS, 2005, 17 (09) :1109-1121

[6] Saturated deep blue organic electrophosphorescence using a fluorine-free emitter [J].

Holmes, RJ ;

Forrest, SR ;

Sajoto, T ;

Tamayo, A ;

Djurovich, PI ;

Thompson, ME ;

Brooks, J ;

Tung, YJ ;

D'Andrade, BW ;

Weaver, MS ;

Kwong, RC ;

Brown, JJ .

APPLIED PHYSICS LETTERS, 2005, 87 (24) :1-3

[7] Blue organic electrophosphorescence using exothermic host-guest energy transfer [J].

Holmes, RJ ;

Forrest, SR ;

Tung, YJ ;

Kwong, RC ;

Brown, JJ ;

Garon, S ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2003, 82 (15) :2422-2424

[8] Efficient, deep-blue organic electrophosphorescence by guest charge trapping [J].

Holmes, RJ ;

D'Andrade, BW ;

Forrest, SR ;

Ren, X ;

Li, J ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2003, 83 (18) :3818-3820

[9] Enhanced electron injection in organic electroluminescence devices using an Al/LiF electrode [J].

Hung, LS ;

Tang, CW ;

Mason, MG .

APPLIED PHYSICS LETTERS, 1997, 70 (02) :152-154

[10] Iridium(III) complexes with orthometalated quinoxaline ligands: Subtle tuning of emission to the saturated red color [J].

Hwang, FM ;

Chen, HY ;

Chen, PS ;

Liu, CS ;

Chi, Y ;

Shu, CF ;

Wu, FL ;

Chou, PT ;

Peng, SM ;

Lee, GH .

INORGANIC CHEMISTRY, 2005, 44 (05) :1344-1353