Solution-processed single-emitting-layer white organic light-emitting diodes based on small molecules with efficiency/CRI/color-stability trade-off

被引：37
作者：
Fu, Qiang [1 ,2 ]
Chen, Jiangshan [1 ]
Zhang, Hongmei [3 ]
Shi, Changsheng [1 ]
Ma, Dongge [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Nanjing Univ Posts & Telecommun, Dept Mat Sci & Engn, Nanjing 210023, Jiangsu, Peoples R China
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 09期
基金：
中国国家自然科学基金;
关键词：
HIGHLY EFFICIENT BLUE; LOW-VOLTAGE; PHOSPHORESCENT OLEDS; QUANTUM EFFICIENCY; IRIDIUM COMPLEX; ROLL-OFF; HOST; DEVICES; EMISSION; ELECTROPHOSPHORESCENCE;
D O I：
10.1364/OE.21.011078
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
By doping blue, green and red dyes into a bipolar host system, a simple single-EML white organic light-emitting diode (WOLED) with efficiency and color-stability trade-off was achieved by solution process. The resulting WOLED shows high efficiency (i.e., 36.5 cd/A and 15.7% at 1141 cd/m(2)), reduced efficiency roll-off (i.e., critical current density j(c) is as high as 140 mA/cm(2)) and, especially, extremely stable electroluminescence spectra with a slight CIE coordinate variation of (0.404 +/- 0.004, 0.436 +/- 0.001). The superior performance of the WOLED is attributed to the effective suppression of exciton quenching and charge trapping in the bipolar EML. (C) 2013 Optical Society of America
引用
收藏
页码：11078 / 11085
页数：8
相关论文
共 37 条
[1]   Transient analysis of organic electrophosphorescence. II. Transient analysis of triplet-triplet annihilation [J].
Baldo, MA ;
Adachi, C ;
Forrest, SR .
PHYSICAL REVIEW B, 2000, 62 (16) :10967-10977
[2]   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
[3]   LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].
BURROUGHES, JH ;
BRADLEY, DDC ;
BROWN, AR ;
MARKS, RN ;
MACKAY, K ;
FRIEND, RH ;
BURN, PL ;
HOLMES, AB .
NATURE, 1990, 347 (6293) :539-541
[4]   High-efficiency red, green and blue phosphorescent homojunction organic light-emitting diodes based on bipolar host materials [J].
Cai, Chao ;
Su, Shi-Jian ;
Chiba, Takayuki ;
Sasabe, Hisahiro ;
Pu, Yong-Jin ;
Nakayama, Kenichi ;
Kido, Junji .
ORGANIC ELECTRONICS, 2011, 12 (05) :843-850
[5]   High-Efficiency Solution-Processed Small Molecule Electrophosphorescent Organic Light-Emitting Diodes [J].
Cai, Min ;
Xiao, Teng ;
Hellerich, Emily ;
Chen, Ying ;
Shinar, Ruth ;
Shinar, Joseph .
ADVANCED MATERIALS, 2011, 23 (31) :3590-+
[6]   Solution-processable small molecules as efficient universal bipolar host for blue, green and red phosphorescent inverted OLEDs [J].
Chen, Jiangshan ;
Shi, Changsheng ;
Fu, Qiang ;
Zhao, Fangchao ;
Hu, Yue ;
Feng, Yuling ;
Ma, Dongge .
JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (11) :5164-5170
[7]   White phosphorescent LEDs offer efficient answer [J].
D'Andrade, Brian .
NATURE PHOTONICS, 2007, 1 (01) :33-34
[8]   Soluble processed low-voltage and high efficiency blue phosphorescent organic light-emitting devices using small molecule host systems [J].
Doh, Yoo Jin ;
Park, Jung Soo ;
Jeon, Woo Sik ;
Pode, Ramchandra ;
Kwon, Jang Hyuk .
ORGANIC ELECTRONICS, 2012, 13 (04) :586-592
[9]   Solution-Processed Highly Efficient Blue Phosphorescent Polymer Light-Emitting Diodes Enabled by a New Electron Transport Material [J].
Earmme, Taeshik ;
Ahmed, Eilaf ;
Jenekhe, Samson A. .
ADVANCED MATERIALS, 2010, 22 (42) :4744-+
[10]   Solution-Processed Small Molecules As Mixed Host for Highly Efficient Blue and White Phosphorescent Organic Light-Emitting Diodes [J].
Fu, Qiang ;
Chen, Jiangshan ;
Shi, Changsheng ;
Ma, Dongge .
ACS APPLIED MATERIALS & INTERFACES, 2012, 4 (12) :6579-6586
1234