Efficient very-high color rendering index organic light-emitting diode

被引:106
作者
Jou, Jwo-Huei [1 ]
Shen, Shih-Ming [1 ]
Lin, Chuen-Ren [1 ]
Wang, Yi-Shan [1 ]
Chou, Yi-Chieh [1 ]
Chen, Sun-Zen [1 ]
Jou, Yung-Cheng [1 ]
机构
[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan
关键词
Organic light-emitting diode; Very-high color rendering index; Carrier regulating layer; WHITE OLEDS; DEVICES; FLUORESCENT; EMISSION; EXCIMER; EXCITON;
D O I
10.1016/j.orgel.2011.02.012
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Very-high color rendering index (CRI > 90) is extremely crucial for lighting in surgery, photography and exhibition of museums etc. We demonstrate herein an efficient very-high CRI organic light-emitting diode with CRI of 98 with an efficacy of 8.3 lm/W at 100 cd/m(2), or CRI of 96 with 5.2 lm/W at 1000 cd/m(2). The very high CRI may be attributed to the successful deposition and emission of the two full-spectrum complementary white emissive layers, especially as a thin interlayer is inserted in between to regulate the injection of carriers. Without the interlayer, the resultant CRI drops to 73 and efficacy to 3.6 lm/W at 1000 cd/m(2). The employment of the carrier regulating layer also helps disperse the injected carriers, leading recombination to occur in a wider area and hence a higher efficiency. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:865 / 868
页数:4
相关论文
共 26 条
[1]   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
[2]   Efficient phosphorescent white OLEDs with high color rendering capability [J].
Chang, Chih-Hao ;
Tien, Kun-Cheng ;
Chen, Chung-Chia ;
Lin, Ming-Shiang ;
Cheng, Hsing-Chieh ;
Liu, Su-Hao ;
Wu, Chung-Chih ;
Hung, Jui-Yi ;
Chiu, Yuan-Chieh ;
Chi, Yun .
ORGANIC ELECTRONICS, 2010, 11 (03) :412-418
[3]   High-color-rendering pure-white phosphorescent organic light-emitting devices employing only two complementary colors [J].
Chang, Chih-Hao ;
Chen, Chung-Chia ;
Wu, Chung-Chih ;
Chang, Sheng-Yuan ;
Hung, Jui-Yi ;
Chi, Yun .
ORGANIC ELECTRONICS, 2010, 11 (02) :266-272
[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]   Mixing of molecular exciton and excimer phosphorescence to tune color and efficiency of organic LEDs [J].
Cocchi, Massimo ;
Kalinowski, Jan ;
Murphy, Lisa ;
Williams, J. A. Gareth ;
Fattori, Valeria .
ORGANIC ELECTRONICS, 2010, 11 (03) :388-396
[6]   White organic light-emitting devices for solid-state lighting [J].
D'Andrade, BW ;
Forrest, SR .
ADVANCED MATERIALS, 2004, 16 (18) :1585-1595
[7]   White phosphorescent organic light-emitting devices with dual triple-doped emissive layers [J].
Eom, Sang-Hyun ;
Zheng, Ying ;
Wrzesniewski, Edward ;
Lee, Jaewon ;
Chopra, Neetu ;
So, Franky ;
Xue, Jiangeng .
APPLIED PHYSICS LETTERS, 2009, 94 (15)
[8]   Efficient, color-stable fluorescent white organic light-emitting diodes with single emission layer by vapor deposition from solvent premixed deposition source [J].
Jou, JH ;
Chiu, YS ;
Wang, CP ;
Wang, RY ;
Hu, C .
APPLIED PHYSICS LETTERS, 2006, 88 (19)
[9]   Nanodot-enhanced high-efficiency pure-white organic light-emitting diodes with mixed-host structures [J].
Jou, Jwo-Huei ;
Chen, Cheng-Chung ;
Chung, Yu-Chiao ;
Hsu, Mao-Teng ;
Wu, Ching-Hsuan ;
Shen, Shih-Ming ;
Wu, Ming-Hsuan ;
Wang, Wei-Ben ;
Tsai, Yung-Cheng ;
Wang, Chung-Pei ;
Shyue, Jing-Jong .
ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (01) :121-126
[10]   Highly efficient orange-red phosphorescent organic light-emitting diode using 2,7-bis(carbazo-9-yl)-9,9-ditolyfluorene as the host [J].
Jou, Jwo-Huei ;
Shen, Shih-Ming ;
Chen, Szu-Hao ;
Wu, Ming-Hsuan ;
Wang, Wei-Ben ;
Wang, Hsi-Ching ;
Lin, Chuen-Ren ;
Chou, Yi-Chieh ;
Wu, Po-Hsien ;
Shyue, Jing-Jong .
APPLIED PHYSICS LETTERS, 2010, 96 (14)