Electroluminescence characteristics of blue light emitting copolymer containing perylene and triazine moieties in the side chain

초록

Novel non-conjugated blue light-emitting copolymers containing perylene and triazine moieties as light emitting and electron transporting units, respectively in the polymer side chain were synthesized. The resulting copolymers were soluble in most organic solvents such as chlorobenzene, THF, chloroform and benzene. The single-layered electroluminescence (EL) device consisting of indium tin oxide (ITO)/copolymer/aluminium (Al) exhibited a maximum external quantum efficiency (0.003%) and a good carrier balance when the triazine content was 30%. In particular, the device emitted blue light (479 nm) corresponding to the emission of perylene moiety. The drive voltage was observed at 5 V and the CIE coordinate was x = 0.16, y = 0.17.

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