Highly efficient solution-processed red organic light-emitting diodes with long-side-chained triplet emitter

被引：30

作者：

Chao, Yu-Chiang ^{[1
]}

Huang, Sheng-Yang ^{[2
]}

Chen, Chun-Yu ^{[1
]}

Chang, Yu-Fan ^{[3
]}

Meng, Hsin-Fei ^{[1
]}

Yen, Feng-Wen ^{[4
]}

Lin, I-Feng ^{[4
]}

Zan, Hsiao-Wen ^{[5
,6
]}

Horng, Sheng-Fu ^{[2
]}

机构：

[1] Natl Chiao Tung Univ, Inst Phys, Hsinchu 300, Taiwan

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

[3] Natl Tsing Hua Univ, Inst Photon Technol, Hsinchu 300, Taiwan

[4] Luminescence Technol Corp, Hsinchu 300, Taiwan

[5] Natl Chiao Tung Univ, Dept Photon, Hsinchu 300, Taiwan

[6] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 300, Taiwan

来源：

SYNTHETIC METALS | 2011年 / 161卷 / 1-2期

关键词：

Polymer light-emitting diodes; Ir complexes; CYCLOMETALATED IRIDIUM COMPLEXES; EMISSION;

D O I：

10.1016/j.synthmet.2010.11.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Newly synthesized red It complexes tris[2-(4-n-hexyl-phenyl)quinoline]iridium(III) and tris[(4-n-hexylphenyl)isoquinoline)]iridium(III) with long alkyl side chains are utilized to demonstrate the high efficiency multi-layer solution-processed red organic light-emitting diodes. Solubilities of these triplet emitters are high which enable them to be uniformly dispersed in the polymer host. Blade coating method is utilized to prepare organic multi-layers without mutual dissolution between different layers. 17 cd/A current efficiency, 10 lm/W power efficiency, and 8.8% external quantum efficiency can be achieved for the device with CsF/Al cathode. 10,000 cd/m(2) is reached at 10 V. Similar quantum efficiency is also achieved with an electron-transport layer and LiF/Al cathode. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：148 / 152

页数：5

共 15 条

[1] Highly phosphorescent perfect green emitting iridium(III) complex for application in OLEDs [J].

Bolink, Henk J. ;

Coronado, Eugenio ;

Santamaria, Sonsoles Garcia ;

Sessolo, Michele ;

Evans, N. ;

Klein, Cedric ;

Baranoff, E. ;

Kalyanasundaram, K. ;

Graetzel, Michael ;

Nazeeruddin, Md. K. .

CHEMICAL COMMUNICATIONS, 2007, (31) :3276-3278

[2] High-efficiency red-light emission from polyfluorenes grafted with cyclometalated iridium complexes and charge transport moiety [J].

Chen, XW ;

Liao, JL ;

Liang, YM ;

Ahmed, MO ;

Tseng, HE ;

Chen, SA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (03) :636-637

[3] New iridium complexes as highly efficient orange-red emitters in organic light-emitting diodes [J].

Duan, JP ;

Sun, PP ;

Cheng, CH .

ADVANCED MATERIALS, 2003, 15 (03) :224-+

[4] High-efficiency solution processable electrophosphorescent iridium complexes bearing polyphenylphenyl dendron ligands [J].

Huang, Chun ;

Zhen, Chang-Gua ;

Su, Siew Ping ;

Chen, Zhi-Kuan ;

Liu, Xiao ;

Zou, De-Chun ;

Shi, Yan-Rong ;

Loh, Kian Ping .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2009, 694 (9-10) :1317-1324

[5] Multi-layer organic light-emitting diodes processed from solution using phosphorescent dendrimers in a polymer host [J].

Ko, Li-Chun ;

Liu, Tsung-Yu ;

Chen, Chun-Yao ;

Yeh, Chung-Ling ;

Tseng, Shin-Rong ;

Chao, Yu-Chiang ;

Meng, Hsin-Fei ;

Lo, Shih-Chun ;

Burn, Paul L. ;

Horng, Sheng-Fu .

ORGANIC ELECTRONICS, 2010, 11 (06) :1005-1009

[6] Organic light-emitting diodes fabricated by a solution process and their stress tolerance [J].

Ohmori, Yutaka ;

Kajii, Hirotake ;

Hino, Yuichi .

JOURNAL OF DISPLAY TECHNOLOGY, 2007, 3 (02) :238-244

[7] Very high-efficiency red-electroluminescence devices based on an amidinate-ligated phosphorescent iridium complex [J].

Peng, Tai ;

Bi, Hai ;

Liu, Yu ;

Fan, Yan ;

Gao, Hongze ;

Wang, Yue ;

Hou, Zhaomin .

JOURNAL OF MATERIALS CHEMISTRY, 2009, 19 (43) :8072-8074

[8] Multilayer polymer light-emitting diodes by blade coating method [J].

Tseng, Shin-Rong ;

Meng, Hsin-Fei ;

Lee, Kuan-Chen ;

Horng, Sheng-Fu .

APPLIED PHYSICS LETTERS, 2008, 93 (15)

[9] Homoleptic cyclometalated iridium complexes with highly efficient red phosphorescence and application to organic light-emitting diode [J].

Tsuboyama, A ;

Iwawaki, H ;

Furugori, M ;

Mukaide, T ;

Kamatani, J ;

Igawa, S ;

Moriyama, T ;

Miura, S ;

Takiguchi, T ;

Okada, S ;

Hoshino, M ;

Ueno, K .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (42) :12971-12979

[10] Highly efficient phosphorescent organic light-emitting diodes using alkyl-substituted iridium complexes as a solution-processible host material [J].

Tsuzuki, Toshimitsu ;

Tokito, Shizuo .

APPLIED PHYSICS EXPRESS, 2008, 1 (02)

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