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Author(s): |
Zhan-lin Xu, Department of Chemistry, Jilin Normal University, Siping 136000, China
Zhi-guo Kong, Department of Chemistry, Jilin Normal University, Siping 136000, China
Xiu-yan Wang, Department of Chemistry, Jilin Normal University, Siping 136000, China
Na Xu, School of Chemical＆Envionmental Engineering, China University of Mining ＆ Technology（Beijing）, Beijing 100083，China
Wen-lian Li, Department of Chemistry, Jilin Normal University, Siping 136000, China |
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Abstract: |
We studied a new copper(I) complex, [Cu(DPEphos)(DPPZ)]BF4 (CuL1L2), which was synthesized by reacting copper (I) tetraacetonitrile tetrafluroborate, bis-[2-(diphenylphosphino)phenyl] ether (DPEphos) with 11-chloropyrido[2′,3′:2,3]pyrazino[5,6-f] 1,10-phenanthroline (PyPPN). CuL1L2 doped multiplayer OLED device was fabricated, it has the structure of ITO（20Ω/ 2-TNATA (5 nm)/ NPB(30 nm)/ TCTA (10nm)/ CBP: 6% CuL1L2 (30 nm)/ TPBI (40 nm)/ LiF (1 nm)/ Al (100 nm). The device shows strong 3MLCT green electrophosphorescent emission, the emission peak wavelength, luminance and current efficiency were 551 nm, 4900 cd/m2 and 13.5 cd/A at 0.13 mA were achieved, respectively; and the device performance is highest among the electrophosphorescence devices based on Cu (I) complex that have been reported.
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