Microscopic simulations of charge transport in disordered organic semiconductors

V. Rühle, A. Lukyanov, F. May, M. Schrader, T. Vehoff, James Kirkpatrick, B. Baumeier, D. Andrienko

Research output: Contribution to journalArticleAcademicpeer-review

231 Citations (Scopus)

Abstract

Charge carrier dynamics in an organic semiconductor can often be described in terms of charge hopping between localized states. The hopping rates depend on electronic coupling elements, reorganization energies, and driving forces, which vary as a function of position and orientation of the molecules. The exact evaluation of these contributions in a molecular assembly is computationally prohibitive. Various, often semiempirical, approximations are employed instead. In this work, we review some of these approaches and introduce a software toolkit which implements them. The purpose of the toolkit is to simplify the workflow for charge transport simulations, provide a uniform error control for the methods and a flexible platform for their development, and eventually allow in silico prescreening of organic semiconductors for specific applications. All implemented methods are illustrated by studying charge transport in amorphous films of tris-(8-hydroxyquinoline)aluminum, a common organic semiconductor.

Original languageEnglish
Pages (from-to)3335-3345
Number of pages11
JournalJournal of Chemical Theory and Computation
Volume7
Issue number10
DOIs
Publication statusPublished - 11 Oct 2011
Externally publishedYes

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    Rühle, V., Lukyanov, A., May, F., Schrader, M., Vehoff, T., Kirkpatrick, J., ... Andrienko, D. (2011). Microscopic simulations of charge transport in disordered organic semiconductors. Journal of Chemical Theory and Computation, 7(10), 3335-3345. https://doi.org/10.1021/ct200388s