Dopant-induced crossover from 1D to 3D charge transport in conjugated polymers

Details Dopant-induced crossover from 1D to 3D charge transport in conjugated polymers Dopant-induced crossover from 1D to 3D charge transport in conjugated polymers

1999-09-28

arxiv.org/abs/cond-mat/9909398v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.83.3904

The interplay between inter- and intra-chain charge transport in bulk polythiophene in the hopping regime has been clarified by studying the conductivity as a function of frequency (up to 3 THz), temperature and doping level. We present a model which quantitatively explains the observed crossover from quasi-one-dimensional transport to three-dimensional hopping conduction with increasing doping level. At high frequencies the conductivity is dominated by charge transport on one-dimensional conducting chains.

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