A model description of charge carrier transport phenomena in organic molecular crystals. I. Polyacene crystals

Results of computer simulation studies of charge carrier transport phenomena in polyacene crystals are presented. A modified Sano-Mozumder (SM) model has been used in order to simulate reported experimental carrier transport characteristics as a function of the electric field E and temperature T. It...

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Bibliographic Details
Published in:Chemical physics 1989-11, Vol.138 (2), p.347-363
Main Authors: Silinsh, E.A., Shlihta, G.A., Jurgis, A.J.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conductivity phenomena in semiconductors and insulators
Electronic transport in condensed matter
Exact sciences and technology
General theory, scattering mechanisms
Physics
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Summary:Results of computer simulation studies of charge carrier transport phenomena in polyacene crystals are presented. A modified Sano-Mozumder (SM) model has been used in order to simulate reported experimental carrier transport characteristics as a function of the electric field E and temperature T. It is shown that in the framework of the SM model it is possible to describe also recently reported anomalous electric field-dependent carrier mobilities in polyacene crystals. Conditions for the creation of hot, non-thermalized carriers and their transport mechanisms at high electric field values are analysed. The present studies demonstrate the plausibility of nearly small molecular polaron (MP) model approach to describe phenomenologically the charge carrier separation and transport phenomena in polyacene crystals over a wide temperature (4.2–300 K) and electric field E = 10 3-10 6V/cm) range bo
ISSN:0301-0104
DOI:10.1016/0301-0104(89)87141-1