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White organic electroluminescent devices based on non-doped-type multiplayer that included [2-methyl-6-[2-(2,3,6,7-tetrahydro-1H, 5H-benzo[ij] quinolizin-9-yl) ethenyl]-4H-pyran-4-ylidene] propane-dinitrile (DCM2) and 10-(2-benzothiazolyl)-2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H, 5 H, 11 H-(1)-benzopyro yran –o (6,7-8-i, j) quinolizin-11-one (C545T) ultrathin layer have been fabricated. By appropriately...
Organic light-emitting devices with a hole-buffer layer (HBL) 4,4′-N,N′-dicarbazole-biphenyl (CBP) inserted between ITO anode and hole transporting layer were fabricated. The present of the CBP can balance the hole and electron injections and reduce the hole-leakage to the cathode resulting in the enhancement of the current efficiency. The highest current efficiency of the device with optimum CBP...
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