Dynamics of oppositely charged carriers in a metal/coupled poly(p-phenylene vinylene) chains/metal structure

Dong Mei Li, Yuan Li, Hai Hong Li, De Sheng Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

By using the extended version of the Su-Schrieffer-Heeger (SSH) tight-binding model and a non-adiabatic dynamic evolution method, we present a study of the dynamic process of oppositely charged carriers in a metal/two coupled poly(p-phenylene vinylene) chains/metal structure. Electrons and holes can be injected into the polymer chains from metal electrodes by applying voltage biases. The behavior of the injected charged carriers depends closely on the electric field and the interchain coupling. The moderate intensity of electric field is in favor of forming stable wave packets, and the charge carriers localized in wave packets occur to transport, hopping, collide and recombine. With increasing the electric field, part of the carriers can be ejected into the metal electrodes.

Original languageEnglish (US)
Pages (from-to)241-246
Number of pages6
JournalCurrent Applied Physics
Volume11
Issue number2
DOIs
StatePublished - Mar 1 2011

Keywords

  • Charge carrier
  • Hopping
  • Inelastic scattering
  • Wave packet

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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