Excitonic polaron and phonon assisted photoluminescence of ZnO nanowires

Hsu Cheng Hsu, Wen Feng Hsieh

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

The coupling strength of the radiative transition of hexagonal ZnO nanowires to the longitudinal optic (LO) phonon polarization field is deduced from temperature dependent photoluminescence spectra. An excitonic polaron formation is discussed to explain why the interaction of free excitons with LO phonons in ZnO nanowires is much stronger than that of bound excitons with LO phonons. The strong exciton-phonon coupling in ZnO nanowires affects not only the Haung-Ray S factor but also the FXA-1LO phonon energy spacing, which can be explained by the excitonic polaron formation.

Original languageEnglish
Pages (from-to)371-375
Number of pages5
JournalSolid State Communications
Volume131
Issue number6
DOIs
Publication statusPublished - 2004 Aug

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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