Polaron transitions in charge intercalated amorphous tungsten oxide thin films

M. F. Saenger, T. Höin, T. Hofmann, M. Schubert

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We present a parametric dielectric function model in dependence of the intercalated charge per tungsten ion ratio x, which excellently describes the ellipsometric experimental data, and allows the identification of two polaron modes corresponding to transitions between W 4+ and W 5+ and between W 5+ and W 6+ tungsten ion sites. A competitive relation between the two polaron transitions is found. An empirical relation for the amplitude of the polaron transitions is found useful to provide a good description of the polaron transition dependence on x.

Original languageEnglish (US)
Pages (from-to)914-917
Number of pages4
JournalPhysica Status Solidi (A) Applications and Materials Science
Issue number4
StatePublished - Apr 2008
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry


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