Spirally configured cis-stilbene/fluorene hybrids as ambipolar, fluorescent materials for organic light emitting diode applications

A new class of cis-stilbene/fluorene spiro hybrid systems with paired diphenylamino donor and cyano, N-phenylbenzimidazole, dimesitylboranyl, or beta , beta -diphenylethenyl acceptor units was synthesized as ambipolar materials for organic light-emitting diode applications. When coupled with hole tr...

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Bibliographic Details
Published inRSC advances Vol. 3; no. 24; pp. 9381 - 9390
Main Authors Chen, Chien-Tien, Chao, Wei-Shan, Liu, Hao-Wei, Wei, Yi, Jou, Jwo-Huei, Kumar, Sudhir
Format Journal Article
LanguageEnglish
Published 01.01.2013
Subjects
Electroluminescence
Hybrid systems
Joining
Luminance
Organic light emitting diodes
Power efficiency
Transporting
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Summary:A new class of cis-stilbene/fluorene spiro hybrid systems with paired diphenylamino donor and cyano, N-phenylbenzimidazole, dimesitylboranyl, or beta , beta -diphenylethenyl acceptor units was synthesized as ambipolar materials for organic light-emitting diode applications. When coupled with hole transporting 4,4'-bis(1-naphthylphenylamino)-1,1'-biphenyl ( alpha -NPB) and electron transporting 2,2',2''-(1,3,5-benzenetriyl)-tris(1-phenyl-1- H-benzimidazole) layers, they served as one of the best bluish green and pure green emitting layers with excellent external quantum efficiencies of 3.9-5.2%, electroluminescent brightness of 2202-3069 cd m super(-2), luminance efficiencies of 11.0-15.8 cd A super(-1), and power efficiencies of 5.7-6.6 lm W super(-1) at 20 mA cm super(-2), which were about 2-3 times better than those based on standard alpha -NPB/tris(8-hydroxyquinoline)aluminum bilayer devices.
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ISSN:2046-2069
2046-2069
DOI:10.1039/c3ra41642a