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

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

2008-04-10

arxiv.org/abs/0804.1767v2

Physics

Chemical Physics

Typo in Eq.(12) has been corrected

Scientific paper

10.1016/j.physleta.2008.07.031

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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