The elementary step of charge carrier transport in polymeric systems studied by the irreversible stochastic transition theory

Yuri A. Berlin*, Dmitri O. Drobnitsky, Valdimir V. Kuzmin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The influence of external stochastic impacts caused by configurational changes of charge carrier surroundings on the kinetics of the trap release process has theoretically been studied. To take into account these impacts, any single step of charge carrier hopping has been treated as a randomly affected monomolecular reaction rather than as a conventional first-order decay process. It has been shown that the combination of the irreversible stochastic transition theory with the concept of diffusion perpendicular to the reaction coordinate allows us to obtain the exact and general analytical result for key kinetic characteristics of a single hop. These results have been used to consider two physically important cases, when the stochastic impact can be approximated by the hopping-independent diffusion or, alternatively, by diffusion coupled with hopping. In both cases transient kinetics has been found to be essentially non-exponential. However, decay curves differ in their forms depending on the type of diffusion process. These findings suggest that in addition to site and bound disorders, conformational changes can be considered as another origin of the dispersive carrier transport in polymeric systems.

Original languageEnglish (US)
Pages (from-to)171-175
Number of pages5
JournalSynthetic Metals
Volume64
Issue number2-3
DOIs
StatePublished - Jun 1994

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'The elementary step of charge carrier transport in polymeric systems studied by the irreversible stochastic transition theory'. Together they form a unique fingerprint.

Cite this