Deviation from the Einstein relation: Mobility of unrelaxed carriers

Yuri A. Berlin*, Laurens D A Siebbeles, Anatoly A. Zharikov

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The relation between the drift mobility and the diffusion coefficient of charge carriers in one-dimensional systems with energy disorder is investigated. By using the effective medium approximation, we derived expressions for these transport coefficients. The analytical results verified by computer simulations demonstrate that the Einstein relation is invalid during the energy relaxation of the charge carriers. Our findings suggest that under typical experimental conditions, the time-of-flight mobility of charge carriers is independent of the field strength and decreases with the sample thickness according to the power law.

Original languageEnglish (US)
Pages (from-to)123-131
Number of pages9
JournalChemical Physics Letters
Volume305
Issue number1-2
DOIs
StatePublished - May 14 1999

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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