Hole Mobility in Substituted N,N′-bis-(m-tolyl)-N,N′-diphenyl-1,1′-biphenyl-4, 4′-diamine (TPD) Derivatives Doped into Poly(styrene)

Max Bishop, Jose Luis Maldonado, Canek Fuentes-Hernandez, Benoit Domercq, Steve Barlow, S. Thayumanavan, Massimo Malagoli, Mariappan Manoharan, Jean Luc Brédas, Seth R. Marder, Bernard Kippelen

Research output: Contribution to conferencePaperpeer-review

Abstract

Hole transport molecules have long been exploited for xerographic photoreceptors and recently in OLED's, photovoltaic cells, or photorefractive polymers. 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 correspond to an increase in the energetic disorder, which contributes to their lower mobilities.

Original languageEnglish (US)
Pages413-417
Number of pages5
StatePublished - 2002
Externally publishedYes
EventIS and T's NIP18: International Conference On Digital Printing Technologies - San Diego, CA, United States
Duration: Sep 29 2002Oct 4 2002

Conference

ConferenceIS and T's NIP18: International Conference On Digital Printing Technologies
Country/TerritoryUnited States
CitySan Diego, CA
Period9/29/0210/4/02

ASJC Scopus subject areas

  • Media Technology
  • Computer Science Applications

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