Photocurrent in conjugated polymers
Condensed Matter
2009-11-10 v1
Abstract
Nonlinear photocurrent carriers in conjugated polymers, such as polarons, bipolarons and solitons, are considered at low photon energies where a tunnelling process is necessary. We show that polarons usually dominate the photocurrent I due to a novel electric field assisted tunnelling for which ln(I) ~ -E^{-2/3}. For near degenerate polymers an electric field E which exceeds the confinement potential and frequencies above twice the soliton energy, soliton tunnelling is favored. Photocurrent data can then be used to identify the remarkable phenomenon of soliton conduction.
Keywords
Cite
@article{arxiv.cond-mat/0304522,
title = {Photocurrent in conjugated polymers},
author = {Baruch Horovitz and Ehoud Pazy},
journal= {arXiv preprint arXiv:cond-mat/0304522},
year = {2009}
}
Comments
4 pages, 2 eps figures, Revtex