High-Efficiency Single Emissive Layer White Organic Light-Emitting Diodes Based on Solution-Processed Dendritic Host and New Orange-Emitting Iridium Complex

被引:352
作者
Zhang, Baohua [1 ]
Tan, Guiping [2 ,3 ,4 ]
Lam, Ching-Shan [2 ,3 ,4 ]
Yao, Bing [1 ]
Ho, Cheuk-Lam [2 ,3 ,4 ]
Liu, Lihui [1 ,5 ]
Xie, Zhiyuan [1 ]
Wong, Wai-Yeung [2 ,3 ,4 ]
Ding, Junqiao [1 ]
Wang, Lixiang [1 ]
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
[2] Univ Grants Comm, Areas Excellence Scheme, Inst Mol Funct Mat, Hong Kong, Hong Kong, Peoples R China
[3] Hong Kong Baptist Univ, Dept Chem, Hong Kong, Hong Kong, Peoples R China
[4] Hong Kong Baptist Univ, Inst Adv Mat, Hong Kong, Hong Kong, Peoples R China
[5] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
基金
中国国家自然科学基金;
关键词
dendrimers; electrophosphorescence; iridium complexes; solution processing; white organic light-emitting diodes; ELECTRON-INJECTION LAYER; ENERGY-TRANSFER; ELECTROPHOSPHORESCENT DEVICES; QUANTUM EFFICIENCY; POLYMER; PERFORMANCE; PHOSPHOR; POLY(N-VINYLCARBAZOLE); CARRIER; OLEDS;
D O I
10.1002/adma.201104758
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An extremely high-efficiency solution-processed white organic light-emitting diode (WOLED) is successfully developed by simultaneously using an ideal dendritic host material and a novel efficient orange phosphorescent iridium complex. The optimized device exhibits forward-viewing efficiencies of 70.6 cd A -1, 26.0%, and 47.6 lm W -1 at a luminance of 100 cd m -2, respectively, promising the low-cost solution-processed WOLEDs a bright future as the next generation of illumination sources. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:1873 / 1877
页数:5
相关论文
共 41 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]   BINDING-ENERGIES OF TRIPLET EXCIMERS IN POLY(N-VINYLCARBAZOLE) SOLID FILMS FROM LASER-BASED KINETIC SPECTROSCOPY BETWEEN 15-K AND 55-K [J].
BURKHART, RD ;
CHAKRABORTY, DK .
JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (10) :4143-4147
[3]   Energy transfer and triplet exciton confinement in polymeric electrophosphorescent devices [J].
Chen, FC ;
Chang, SC ;
He, GF ;
Pyo, S ;
Yang, Y ;
Kurotaki, M ;
Kido, J .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2003, 41 (21) :2681-2690
[4]   White organic light-emitting devices for solid-state lighting [J].
D'Andrade, BW ;
Forrest, SR .
ADVANCED MATERIALS, 2004, 16 (18) :1585-1595
[5]   Solution-Processable Carbazole-Based Conjugated Dendritic Hosts for Power-Efficient Blue-Electrophosphorescent Devices [J].
Ding, Junqiao ;
Zhang, Baohua ;
Lue, Jianhong ;
Xie, Zhiyuan ;
Wang, Lixiang ;
Jing, Xiabin ;
Wang, Fosong .
ADVANCED MATERIALS, 2009, 21 (48) :4983-+
[6]   Triplet energy back transfer in conjugated polymers with pendant phosphorescent iridium complexes [J].
Evans, Nicholas R. ;
Devi, Lekshmi Sudha ;
Mak, Chris S. K. ;
Watkins, Scott E. ;
Pascu, Sofia I. ;
Koehler, Anna ;
Friend, Richard H. ;
Williams, Charlotte K. ;
Holmes, Andrew B. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (20) :6647-6656
[7]   White Organic Light-Emitting Diodes [J].
Gather, Malte C. ;
Koehnen, Anne ;
Meerholz, Klaus .
ADVANCED MATERIALS, 2011, 23 (02) :233-248
[8]   Quantum efficiency roll-off at high brightness in fluorescent and phosphorescent organic light emitting diodes [J].
Giebink, N. C. ;
Forrest, S. R. .
PHYSICAL REVIEW B, 2008, 77 (23)
[9]   Multilayer polymer light-emitting diodes: White-light emission with high efficiency [J].
Gong, X ;
Wang, S ;
Moses, D ;
Bazan, GC ;
Heeger, AJ .
ADVANCED MATERIALS, 2005, 17 (17) :2053-+
[10]   A multifunctional iridium-carbazolyl orange phosphor for high-performance two-element WOLED exploiting Exciton-Managed fluorescence/phosphorescence [J].
Ho, Cheuk-Lam ;
Wong, Wai-Yeung ;
Wang, Qi ;
Ma, Dongge ;
Wang, Lixiang ;
Lin, Zhenyang .
ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (06) :928-937