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

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

References in corpus (2)

• Hopping Conductivity of a Nearly-1d Fractal: a Model for Conducting Polymers
• Critical Percolation and Transport in Nearly One Dimension

Cited by in corpus (5)

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• Evidence of ratchet effect in nanowires of a conducting polymer
• A quantitative evaluation of metallic conduction in conjugated polymers
• Dielectric quantification of conductivity limitations due to nanofiller size in conductive powders and nanocomposites
• Activated hopping transport in anisotropic systems at low temperatures