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Photoluminescence and Electroluminescence in Combination of Rare-Earth Metal Complexes and Phosphorescent Molecules

Published online by Cambridge University Press:  26 February 2011

Zenken Kin
Affiliation:
k-zenken@casi.osaka-u.ac.jp, Osaka University, Center for Advanced Science and Innovation, 2-1 Yamada-Oka, Suita, 565-0871, Japan
Yuichi Hino
Affiliation:
hino@casi.osaka-u.ac.jp, Osaka University, Center for Advanced Science and Innovation, 2-1 Yamada-oka, Suita, 565-0871, Japan
Hirotake Kajii
Affiliation:
kajii@casi.osaka-u.ac.jp, Osaka University, Center for Advanced Science and Innovation, 2-1 Yamada-oka, Suita, 565-0871, Japan
Yasuchika Hasegawa
Affiliation:
hasegawa@ms.naist.jp, Nara Institute of Science and Technology, Graduate School of Materials Science, 8916-5 Takayama-cho, Ikoma, 630-0192, Japan
Tsuyoshi Kawai
Affiliation:
tkawai@ms.naist.jp, Nara Institute of Science and Technology, Graduate School of Materials Science, 8916-5 Takayama-cho, Ikoma, 630-0192, Japan
Yutaka Ohmori
Affiliation:
ohmori@casi.osaka-u.ac.jp, Osaka University, Center for Advanced Science and Innovation, 2-1 Yamada-oka, Suita, 565-0871, Japan
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Abstract

We investigated luminescent properties of rare-earth metal complexes and phosphor-rescent molecules doped in a conducting polymer. Electroluminescent (EL) properties in combination of red emissive europium complex of tris(di-benzoylmethane)-mono(4,7-diphenyl-phenanthroline) europium (III) (Eu(dbm)3phen) and blue phosphorescent molecule of bis[(4,6-difluoro-phenyl)-pyridinato-N,C2'] (picolinate) iridium (III) (FIrpic) doped in poly(N-vinyl-carbazole) (PVK) and a new rare-earth complex tris(hexafluoroacethylacetonato) (phenan-throline) samarium(III) [Sm(hfa)3(phen)2] have been investigated as an EL emitter. White EL has been obtained from mixed layer of Eu(dbm)3phen and FIrpic, and EL from Sm complex has been obtained. Energy transfer and the emission mechanisms have been discussed.

Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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References

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