Blue organic electroluminescent devices based on a distyrylarylene derivative as emitting layer and a terbium complex as electron-transporting layer |
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| Authors: | Ling Huang He TianFu-You Li De-Qing Gao Yan-Yi Huang Chun-Hui Huang |
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| Institution: | a State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, People's Republic of Chinab University of Hong Kong Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry, Beijing 100871, People's Republic of Chinac Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, People's Republic of China |
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| Abstract: | With a blue distyrylarylene derivative, 4,4′-bis(2,2-di(2-methoxyphenyl)ethenyl)-1,1′-biphenyl (CBS) as emitting material, double-layer and triple-layer electroluminescent (EL) devices were fabricated. For the device using tris-(1-phenyl-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/m2 was achieved at 19 V. 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. |
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| Keywords: | Rare earth 4 4&prime -bis(2 2-di(2-methoxyphenyl)ethenyl)-1 1&prime -biphenyl |
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