Dopant-induced crossover from 1D to 3D charge transport in conjugated polymers
arXiv:cond-mat/9909398 · doi:10.1103/PhysRevLett.83.3904
Abstract
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.
4 pages, 2 figures