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Proceedings Paper

Development of new hole-transporting amorphous molecular materials for organic electroluminescent devices and their charge-transport properties
Author(s): Yasuhiko Shirota; Kenji Okumoto
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Paper Abstract

New hole-transporting amorphous molecular materials with high glass-transition temperatures for organic electroluminescent devices have been developed and their charge-transport properties investigated. They comprise 4,4',4'-tris[biphenyl-2-yl-(phenyl) amino]triphenylamine, 4,4'4'-tris[biphenyl-3-yl- (phenyl)amino]triphenylamine, and 4,4'4'-tris- [biphenyl-4-yl-(3-methylphenyl)amino]triphenylamine, 4,4'4'-tris[9,9-dimethyl-2- fluorenyl(phenyl)amino]triphenylamine, N,N'-di(biphenyl- 2-yl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine, N,N'-di(biphenyl-3-yl)-N,N'-diphenyl-[1,1'-biphenyl]- 4,4'-diamine, N,N'-di(biphenyl-4-yl)-N,N'-diphenyl-[1,1'- biphenyl]-4,4'-diamine, N,N'-bis(9,9-dimethyl-2- fluorenyl)-N,N'-diphenyl-9,9-dimethylfluorene-2,7-diamine, and N,N,N',N'-tetrakis(9,9-dimethyl-2-fluorenyl)-[1,1'- biphenyl]-4,4'-diamine. Hole drift mobilities of these materials were determined by the time-of-flight method, and the electric field and temperature dependencies of drift mobility were analyzed in terms of the disorder formalism.

Paper Details

Date Published: 2 February 2001
PDF: 9 pages
Proc. SPIE 4105, Organic Light-Emitting Materials and Devices IV, (2 February 2001); doi: 10.1117/12.416890
Show Author Affiliations
Yasuhiko Shirota, Osaka Univ. (Japan)
Kenji Okumoto, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 4105:
Organic Light-Emitting Materials and Devices IV
Zakya H. Kafafi, Editor(s)

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