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Title of article :
High-field hopping mobility in molecular systems with spatially correlated energetic disorder
Author/Authors :
Gartstein، نويسنده , , Yu.N. and Conwell، نويسنده , , E.M.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1995
Pages :
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Abstract :
Prior Monte Carlo simulations of hopping mobility μ versus electric field E using the Gaussian disorder model have shown, in disagreement with experiment, only a short range of fields where log μ α E12 (Poole-Frenkel type behavior). We demonstrate that the introduction of correlation of the energies of sites close together can lead to field dependences similar to the Poole-Frenkel one over the wide range of fields where it is usually seen experimentally. Such correlation is physically reasonable, for example, for systems in which the fluctuations of site energy are due to the interaction of charge carriers with permanent dipoles or to molecular density fluctuations.
Journal title :
Chemical Physics Letters
Journal title :
Chemical Physics Letters
Serial Year :
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