ICCAS OpenIR
A Robust Yellow-Emitting Metallophosphor with Electron-Injection/-Transporting Traits for Highly Efficient White Organic Light-Emitting Diodes
Zhou, Guijiang1,2; Yang, Xiaolong1,2; Wong, Wai-Yeung3,4,5; Wang, Qi6; Suo, Si7; Ma, Dongge6; Feng, Jikang8; Wang, Lixiang
2011-10-24
Source PublicationCHEMPHYSCHEM
ISSN1439-4235
Volume12Issue:15Pages:2836-2843
AbstractWith the aim of endowing triplet emitters in the development of organic light-emitting devices (OLEDs) with electron-injection/-transporting (EI/ET) features, the phenylsulfonyl moiety was introduced into the phenyl ring of a 2-phenylpyridine (Hppy) ligand and the yellow phosphorescent heteroleptic iridium(III) complex 1 was developed. It was shown that the SO2Ph unit could provide EI/ET character to 1, as indicated from both electrochemical and computational data. Complex 1 is a promising yellow-emitting material for both monochromatic OLEDs and white OLEDs (WOLEDs). The outstanding electronic traits associated with 1, coupled with careful device design, afforded very attractive electroluminescent performances for two-element WOLEDs, including a low turn-on voltage of less than 3.7 V, a maximum brightness of 48000 cd m(-2), an external quantum efficiency of 13.0 %, a luminance efficiency of 34.7 cd A(-1), and a power efficiency of 24.3 Lm W-1. In addition, a good color rendering index (CRI) of about 74, a stable white color with a Commission Internationale de L'Eclairage (CIEx,y) variation of Delta(x, y)< +/- (0.02, 0.02), and a correlated color temperature higher than 5130 K were obtained. These encouraging results indicate the potential of these WOLEDs as good candidates for warm indoor lighting sources, as well as the critical contribution of such key EI/ET properties to triplet emitters to advance new OLED research.
KeywordElectron Injection Electron Transport Fluorescence Organic Light-emitting Diodes Phosphorescence
DOI10.1002/cphc.201100259
Indexed BySCI
Language英语
WOS IDWOS:000297017600024
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/72086
Collection中国科学院化学研究所
Corresponding AuthorZhou, Guijiang
Affiliation1.Xi An Jiao Tong Univ, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Fac Sci, Xian 710049, Peoples R China
2.Xi An Jiao Tong Univ, Dept Chem, Fac Sci, Xian 710049, Peoples R China
3.Hong Kong Baptist Univ, Inst Mol Funct Mat, Hong Kong, Hong Kong, Peoples R China
4.Hong Kong Baptist Univ, Dept Chem, Hong Kong, Hong Kong, Peoples R China
5.Hong Kong Baptist Univ, Ctr Adv Luminescence Mat, Hong Kong, Hong Kong, Peoples R China
6.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
7.Xi An Jiao Tong Univ, Dept Civil Engn, Xian 710049, Peoples R China
8.Jilin Univ, Inst Theoret Chem, State Key Lab Theoret & Computat Chem, Changchun 130023, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Guijiang,Yang, Xiaolong,Wong, Wai-Yeung,et al. A Robust Yellow-Emitting Metallophosphor with Electron-Injection/-Transporting Traits for Highly Efficient White Organic Light-Emitting Diodes[J]. CHEMPHYSCHEM,2011,12(15):2836-2843.
APA Zhou, Guijiang.,Yang, Xiaolong.,Wong, Wai-Yeung.,Wang, Qi.,Suo, Si.,...&Wang, Lixiang.(2011).A Robust Yellow-Emitting Metallophosphor with Electron-Injection/-Transporting Traits for Highly Efficient White Organic Light-Emitting Diodes.CHEMPHYSCHEM,12(15),2836-2843.
MLA Zhou, Guijiang,et al."A Robust Yellow-Emitting Metallophosphor with Electron-Injection/-Transporting Traits for Highly Efficient White Organic Light-Emitting Diodes".CHEMPHYSCHEM 12.15(2011):2836-2843.
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