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Highly efficient phosphorescent iridium (III) diazine complexes for OLEDs: Different photophysical property between iridium (III) pyrazine complex and iridium (III) pyrimidine complex
Ge, Guoping1; He, Jing2; Guo, Haiqing1; Wang, Fuzhi3; Zou, Dechun3
2009-09-01
Source PublicationJOURNAL OF ORGANOMETALLIC CHEMISTRY
ISSN0022-328X
Volume694Issue:19Pages:3050-3057
AbstractThe synthesis and luminescence of four new iridium (III) diazine complexes (1-4) were investigated. HOMO and LUMO energy levels of the complexes were estimated according to the electrochemical performance and the UV-Vis absorption spectra, showing the pyrimidine complexes have a larger increase for the LUMO than the HOMO orbital in comparison with the pyrazine complexes. Several high-efficiency yellow and green OLEDs based on phosphorescent iridium (III) diazine complexes were obtained. The devices emitting yellow light based on 1 with turn-on voltage of 4.1 V exhibited an external quantum efficiency of 13.2% (power efficiency 20.3 lm/W), a maximum current efficiency of 37.3 cd/A. The electroluminescent performance for the green iridium pyrimidine complex of 3 is comparable to that of the iridium pyridine complex (PPY)(2)Ir(acac) (PPY = 2-phenylpyridine), which is among the best reported. (C) 2009 Elsevier B.V. All rights reserved.
KeywordPhosphorescence Iridium Diazine Complex (3)Mlct Oled
DOI10.1016/j.jorganchem.2009.05.037
Indexed BySCI ; IC
Language英语
WOS IDWOS:000268799500002
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:58[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66342
Collection中国科学院化学研究所
Corresponding AuthorGuo, Haiqing
Affiliation1.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
2.Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China
3.Peking Univ, Key Lab Polymer Chem & Phys, Educ Minist, Dept Polymer Sci & Engn,Coll Chem & Mol Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Ge, Guoping,He, Jing,Guo, Haiqing,et al. Highly efficient phosphorescent iridium (III) diazine complexes for OLEDs: Different photophysical property between iridium (III) pyrazine complex and iridium (III) pyrimidine complex[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY,2009,694(19):3050-3057.
APA Ge, Guoping,He, Jing,Guo, Haiqing,Wang, Fuzhi,&Zou, Dechun.(2009).Highly efficient phosphorescent iridium (III) diazine complexes for OLEDs: Different photophysical property between iridium (III) pyrazine complex and iridium (III) pyrimidine complex.JOURNAL OF ORGANOMETALLIC CHEMISTRY,694(19),3050-3057.
MLA Ge, Guoping,et al."Highly efficient phosphorescent iridium (III) diazine complexes for OLEDs: Different photophysical property between iridium (III) pyrazine complex and iridium (III) pyrimidine complex".JOURNAL OF ORGANOMETALLIC CHEMISTRY 694.19(2009):3050-3057.
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