Blue organic electroluminescent devices based on a distyrylarylene derivative as emitting layer and a terbium complex as electron-transporting layer
نویسندگان
چکیده
With a blue distyrylarylene derivative, 4,40-bis(2,2-di(2-methoxyphenyl)ethenyl)-1,10-biphenyl (CBS) as emitting material, double-layer and triple-layer electroluminescent (EL) devices were fabricated. For the device using tris-(1phenyl-3-methyl-4-isobutyryl-5-pyrozolone)-bis(triphenyl phosphine oxide) terbium (Tb(PMIP)3(TPPO)2) as the electron-transporting layer, blue EL emission with a maximum luminance of 253 cd/m was achieved at 19V. The difference of Tb(PMIP)3(TPPO)2 and tris(8-hydroxyquinolinate)aluminum (AlQ) as the electron-transporting materials in these devices were compared and discussed. r 2002 Published by Elsevier Science B.V.
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