High power efficiency in simplified two layer blue phosphorescent organic light-emitting diodes

被引：33

作者：

Jang, Sang Eok ^{[1
]}

Yook, Kyoung Soo ^{[1
]}

Lee, Jun Yeob ^{[1
]}

机构：

[1] Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi Do, South Korea

来源：

ORGANIC ELECTRONICS | 2010年 / 11卷 / 06期

关键词：

High power efficiency; Blue phosphorescent organic light-emitting diodes; Simple structure; Mixed host; ELECTROPHOSPHORESCENCE; DEVICES;

D O I：

10.1016/j.orgel.2010.04.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High power efficiency blue phosphorescent organic light-emitting diodes (PHOLEDs) with only two organic layers were developed using a spirobifluorene based phosphine oxide (SPPO13) host material. Two layer blue PHOLEDs with only 1,1-bis[(di-4-tolylamino) phenyl] cyclohexane (TAPC) hole transport layer and TAPC: SPPO13: blue dopant mixed host emitting layer were fabricated. A high power efficiency of 26.0 lm/W at 1000 cd/m(2) were achieved in the simple blue device due to the high quantum efficiency of 17.5% and a low driving voltage of 4.1 V at 1000 cd/m(2). In addition, a maximum power efficiency of 48.5 lm/W and a high quantum efficiency of 19.6% were demonstrated from the simple blue PHOLEDs with only two organic layers. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1154 / 1157

页数：4

共 12 条

[1] Ultraviolet electroluminescence and blue-green phosphorescence using an organic diphosphine oxide charge transporting layer [J].

Burrows, PE ;

Padmaperuma, AB ;

Sapochak, LS ;

Djurovich, P ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2006, 88 (18)

[2] 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)

[3] 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

[4] High-Efficiency Deep-Blue-Phosphorescent Organic Light-Emitting Diodes Using a Phosphine Oxide and a Phosphine Sulfide High-Triplet-Energy Host Material with Bipolar Charge-Transport Properties [J].

Jeon, Soon Ok ;

Yook, Kyoung Soo ;

Joo, Chul Woong ;

Lee, Jun Yeob .

ADVANCED MATERIALS, 2010, 22 (16) :1872-+

[5] Phenylcarbazole-Based Phosphine Oxide Host Materials For High Efficiency In Deep Blue Phosphorescent Organic Light-Emitting Diodes [J].

Jeon, Soon Ok ;

Yook, Kyoung Soo ;

Joo, Chul Woong ;

Lee, Jun Yeob .

ADVANCED FUNCTIONAL MATERIALS, 2009, 19 (22) :3644-3649

[6] High-efficiency low-voltage phosphorescent OLED devices with mixed host [J].

Kondakova, Marina E. ;

Deaton, Joseph C. ;

Kondakov, Denis Y. ;

Pawlik, Thomas D. ;

Young, Ralph H. ;

Brown, Christopher T. ;

Giesen, David J. .

2007 SID INTERNATIONAL SYMPOSIUM, DIGEST OF TECHNICAL PAPERS, VOL XXXVIII, BOOKS I AND II, 2007, 38 :837-840

[7] Improved performance of blue phosphorescent organic light-emitting diodes with a mixed host system [J].

Lee, Jonghee ;

Lee, Jeong-Ik ;

Lee, Jun Yeob ;

Chu, Hye Yong .

APPLIED PHYSICS LETTERS, 2009, 95 (25)

[8] New charge transporting host material for short wavelength organic electrophosphorescence: 2,7-bis(diphenylphosphine oxide)-9,9-dimethylfluorene [J].

Padmaperuma, AB ;

Sapochak, LS ;

Burrows, PE .

CHEMISTRY OF MATERIALS, 2006, 18 (09) :2389-2396

[9]

REN X, 2003, CHEM MATER, V4743, P2004

[10] Highly efficient organic blue electrophosphorescent devices based on 3,6-bis(triphenylsilyl)carbazole as the host material [J].

Tsai, Ming-Han ;

Lin, Hao-Wu ;

Su, Hai-Ching ;

Ke, Tung-Huei ;

Wu, Chung-Chih ;

Fang, Fu-Chuan ;

Liao, Yuan-Li ;

Wong, Ken-Tsung ;

Wu, Chih-I .

ADVANCED MATERIALS, 2006, 18 (09) :1216-+

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