Effect of aryl substitution on the hole mobility of bis-diarylaminobiphenyl doped polymer composites

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Hole mobilities in substituted N,N′-bis-(m-tolyl)-N-N′-diphenyl-1,1′-biphenyl-4,4′-diam ine (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.

Original languageEnglish (US)
Pages (from-to)42-50
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4802
DOIs
StatePublished - 2002
Externally publishedYes

Keywords

  • Dipole moment
  • Disorder formalism
  • Energetic and positional disorder
  • Hole mobility
  • Time-of-flight

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Effect of aryl substitution on the hole mobility of bis-diarylaminobiphenyl doped polymer composites'. Together they form a unique fingerprint.

Cite this