Improvement in the efficiency of organic light emitting diode consisting of copolymer having hole and electron transporting moieties and CsF as an injection material

초록

organic light emitting diodes (OLEDs) with a novel carrier transporting copolymer having a triphenylamine moiety as hole transporting unit and a triazine moiety as electron transporting unit in the polymer side chain and a CsF as electron injection material were fabricated. The device consisting of ITO/copolymer and DCM emitting material (500 Angstrom)/CsF (5 Angstrom)/Al showed high quantum efficiency of 0.3% at a DC 12 V. Especially, the electroluminescence (EL) device emitted red light (720 run) with high brightness corresponding to the emitting material.

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