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5 November 2002 Effect of aryl substitution on the hole mobility of bis-diarylaminobiphenyl-doped polymer composites
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Abstract
Hole mobilities in substituted N, N'-bis-(m-tolyl)-N-N'-diphenyl-1,1'-biphenyl-4,4'-diamine (TPD) derivatives doped in polystyrene (PS), were analyzed by the time-of-flight technique to determine the effect of altering the geometric and electronic structure of TPD. Data were collected as a function of applied field and temperature to yield the energetic and positional disorder parameters defined in the disorder formalism. The impact of the molecular dipole moment on transport properties was also evaluated. The larger molecular dipole moments of the derivatives lead to an increase in the energetic disorder, which contributes to their lower mobilities. However, the dipolar disorder contribution was found to account only partially for the large differences in mobility.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jose-Luis Maldonado, Max Bishop, Canek Fuentes-Hernandez, Benoit Domercq, Stephen Barlow, S. Thayumanavan, Massimo Malagoli, Mariappan Manoharan, Jean-Luc Bredas, Seth R. Marder, and Bernard Kippelen "Effect of aryl substitution on the hole mobility of bis-diarylaminobiphenyl-doped polymer composites", Proc. SPIE 4802, Organic Photorefractive and Photosensitive Materials for Holographic Applications, (5 November 2002); https://doi.org/10.1117/12.453486
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