Efficient phosphorescent white OLEDs with high color rendering capability

被引：78

作者：

Chang, Chih-Hao ^{[1
,2
]}

Tien, Kun-Cheng ^{[1
,2
]}

Chen, Chung-Chia ^{[1
,2
]}

Lin, Ming-Shiang ^{[1
,2
]}

Cheng, Hsing-Chieh ^{[1
,2
]}

Liu, Su-Hao ^{[1
,2
]}

Wu, Chung-Chih ^{[1
,2
]}

Hung, Jui-Yi ^{[3
]}

Chiu, Yuan-Chieh ^{[3
]}

Chi, Yun ^{[3
]}

机构：

[1] Natl Taiwan Univ, Grad Inst Photon & Optoelect, Dept Elect Engn, Taipei 10617, Taiwan

[2] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 10617, Taiwan

[3] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan

来源：

ORGANIC ELECTRONICS | 2010年 / 11卷 / 03期

关键词：

Iridium; Osmium; Phosphorescence; White OLEDs; Color rendering index; LIGHT-EMITTING DEVICES; EXTERNAL QUANTUM EFFICIENCY; ELECTROPHOSPHORESCENT DEVICES; IRIDIUM(III) COMPLEXES; TRIPLET EXCITONS; BLUE; DIODES; EMISSION; EMITTERS; LAYERS;

D O I：

10.1016/j.orgel.2009.11.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By utilizing a newly developed deep-blue iridium complex along with efficient green and orange-red phosphors, we have successfully demonstrated efficient three-component phosphorescent white-emitting organic light-emitting devices (WOLEDs) with excellent performances. Such WOLEDs were based on the deep-blue phosphorescent OLEDs architecture with double emitting layers and double confining layers; portions of the deep-blue phosphors were selectively replaced with green and orange-red phosphors, thereby forming a structure with the green/orange-red emitting layers sandwiched between the two deep-blue emitting layers. Such three-component phosphorescent WOLEDs yielded a high color rendering index (CRI) of up to 94 and Commission Internationale de l'Eclairage (CIE) coordinates close to the ideal equal-energy white (0.33, 0.33). Furthermore, they exhibited rather stable colors and high CRI over a wide brightness range of 10(2)-10(4) cd/m(2) and yielded electroluminescence efficiencies of up to 10.3%, 24.0 cd/A and 16.4 lm/W for the forward directions. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：412 / 418

页数：7

共 33 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 white OLEDs employing phosphorescent sensitization [J].

Chang, Chih-Hao ;

Lu, Yin-Jui ;

Liu, Chih-Che ;

Yeh, Yung-Hui ;

Wu, Chung-Chih .

JOURNAL OF DISPLAY TECHNOLOGY, 2007, 3 (02) :193-199

[3] Efficient iridium(III) based, true-blue emitting phosphorescent OLEDS employing both double emission and double buffer layers [J].

Chang, Chih-Hao ;

Chen, Chung-Chia ;

Wu, Chung-Chih ;

Yang, Cheng-Han ;

Chi, Yun .

ORGANIC ELECTRONICS, 2009, 10 (07) :1364-1371

[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] Highly efficient blue-emitting iridium(III) carbene complexes and phosphorescent OLEDs [J].

Chang, Chiung-Fang ;

Cheng, Yi-Ming ;

Chi, Yun ;

Chiu, Yuan-Chieh ;

Lin, Chao-Chen ;

Lee, Gene-Hsiang ;

Chou, Pi-Tai ;

Chen, Chung-Chia ;

Chang, Chih-Hao ;

Wu, Chung-Chih .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (24) :4542-4545

[6] White organic light-emitting devices with a phosphorescent multiple emissive layer [J].

Cheng, Gang ;

Zhang, Yingfang ;

Zhao, Yi ;

Lin, Yuanyuan ;

Ruan, Chunyan ;

Liu, Shiyong ;

Fei, Teng ;

Ma, Yuguang ;

Cheng, Yanxiang .

APPLIED PHYSICS LETTERS, 2006, 89 (04)

[7] Blue to True-Blue Phosphorescent IrIII Complexes Bearing a Nonconjugated Ancillary Phosphine Chelate: Strategic Synthesis, Photophysics, and Device Integration [J].

Chiu, Yuan-Chieh ;

Chi, Yun ;

Hung, Jui-Yi ;

Cheng, Yi-Ming ;

Yu, Ya-Chien ;

Chung, Ming-Wen ;

Lee, Gene-Hsiang ;

Chou, Pi-Tai ;

Chen, Chung-Chia ;

Wu, Chung-Chih ;

Hsieh, Hsi-Ying .

ACS APPLIED MATERIALS & INTERFACES, 2009, 1 (02) :433-442

[8] En Route to High External Quantum Efficiency (∼12%), Organic True-Blue-Light-Emitting Diodes Employing Novel Design of Iridium (III) Phosphors [J].

Chiu, Yuan-Chieh ;

Hung, Jui-Yi ;

Chi, Yun ;

Chen, Chung-Chia ;

Chang, Chih-Hao ;

Wu, Chung-Chih ;

Cheng, Yi-Ming ;

Yu, Ya-Chien ;

Lee, Gene-Hsiang ;

Chou, Pi-Tai .

ADVANCED MATERIALS, 2009, 21 (21) :2221-+

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

Chou, Pi-Tai ;

Chi, Yun .

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

[10] Organic light-emitting device luminaire for illumination applications [J].

D'Andrade, BW ;

Brown, JJ .

APPLIED PHYSICS LETTERS, 2006, 88 (19)

← 1 2 3 4 →