Citation: MA Ting-Chun, LIU Shu-Juan, TAO Peng, XU Hang, ZHAO Qiang, XU Wen-Juan, ZHANG Ping-Lin, WANG Yi-Fan, LUO Chang-Cheng, LIEN Shui-Chih Alan, HUANG Wei. A Fluorine-Containing Phosphorescent Iridium(Ⅱ) Complex for High-Efficiency Green Organic Light-Emitting Device[J]. Chinese Journal of Inorganic Chemistry, ;2015, (5): 1034-1040. doi: 10.11862/CJIC.2015.123 shu

A Fluorine-Containing Phosphorescent Iridium(Ⅱ) Complex for High-Efficiency Green Organic Light-Emitting Device

1.
1 Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China;
2.
2 Shenzhen China Star Optoelectronics Technology Co., LTD. (CSOT), Shenzhen, Guangdong 518132, China;
3.
3 Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 211816, China

Corresponding author: ZHAO Qiang, WANG Yi-Fan, HUANG Wei,
Received Date: 22 December 2014
Available Online: 12 March 2015
Fund Project: 国家自然科学基金青年基金(No.21201104) (No.21201104)江苏自然科学基金面上项目(No.BK20141422) (No.BK20141422)江苏省有机电子与信息显示重点实验室提升项目(No.BM2012010) (No.BM2012010)江苏高校优势学科建设工程资助项目(No.YX03001) (No.YX03001)教育部创新团队(长江学者和创新团队发展计划)(No.IRT1148) (长江学者和创新团队发展计划)(No.IRT1148)南京邮电大学引进人才启动基金(No.NY213096)资助项目。 (No.NY213096)

A green-light emitting iridium(Ⅱ) complex Ir(dfbppy)₂(acac) with 2-(3-(2',4'-difluorophenyl)phenyl)pyridine (Hdfbppy) as C^N ligands and 2,4-pentanedione (Hacac) as an ancillary ligand was designed and synthesized for phosphorescent organic light emitting diodes, and its photophysical and electroluminescent properties were investigated. The title complex exhibits a peak emission at 520 nm, a high PL quantum yield of 71%, and a relatively short phosphorescence emission lifetime of 381 ns in CH₂Cl₂ at room temperature. An organic light-emitting diode using this complex with 4,4'-N,N'-dicarbazolylbiphenyl (CBP) as the host shows a green color with CIE coordinates of (0.33, 0.62), accompanied by a rather excellent performance with a maximum luminance of 68324 cd·m^-2 at 7.2 V, the luminous and power efficiencies are 53 cd·A^-1 and 37 lm·W^-1, respectively.
- green emitting materials;iridium(Ⅱ) complex;optoelectronic performances;organic light emitting devices;phosphorescence
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