Photocurrent in conjugated polymers

B. Horovitz, E. Pazy

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Non-linear 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 dominate the photocurrent I due to a novel electric-field-assisted tunnelling route for which ln I ∼ -E-2/3. For near-degenerate polymers with an electric field E which exceeds the confinement parameter and frequencies near twice the soliton energy, soliton formation is favored. Photocurrent data can then be used to identify the remarkable soliton conduction.

Original languageEnglish
Pages (from-to)386-392
Number of pages7
JournalEPL
Volume65
Issue number3
DOIs
StatePublished - 1 Feb 2004

ASJC Scopus subject areas

  • General Physics and Astronomy

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