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arXiv · 0804.1767

One-dimensional semiconductor in a polar solvent: Solvation and low-frequency dynamics of an excess charge carrier

Yu. N. Gartstein·G. L. Ussery
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Abstract

Due to solvation, excess charge carriers on 1d semiconductor nanostructures immersed in polar solvents undergo self-localization into polaronic states. Using a simplified theoretical model for small-diameter structures, we study low-frequency properties of resulting 1d adiabatic polarons. The combined microscopic dynamics of the electronic charge density and the solvent leads to macroscopic Langevin dynamics of a polaron and to the appearance of local dielectric relaxation modes. Polaron mobility is evaluated as a function of system parameters. Numerical estimates indicate that the solvated carriers can have mobilities orders of magnitude lower than the intrinsic values.

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Yu. N. Gartstein, G. L. Ussery. 2008-07-25. One-dimensional semiconductor in a polar solvent: Solvation and low-frequency dynamics of an excess charge carrier. https://doi.org/10.1016/j.physleta.2008.07.031

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