Polaron transitions in charge intercalated amorphous tungsten oxide thin films

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

doi:10.1002/pssa.200777894

Polaron transitions in charge intercalated amorphous tungsten oxide thin films

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

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	914-917
Number of pages	4
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	205
Issue number	4
DOIs	https://doi.org/10.1002/pssa.200777894
State	Published - Apr 2008
Externally published	Yes

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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10.1002/pssa.200777894

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abstract = "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.",

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T1 - Polaron transitions in charge intercalated amorphous tungsten oxide thin films

AU - Saenger, M. F.

AU - Höin, T.

AU - Hofmann, T.

AU - Schubert, M.

PY - 2008/4

Y1 - 2008/4

N2 - 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.

AB - 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.

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JF - Physica Status Solidi (A) Applications and Materials Science

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Polaron transitions in charge intercalated amorphous tungsten oxide thin films

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