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In-situ ellipsometric study of WO3–x dielectric permittivity during gasochromic colourationстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Kulikova D.P., Baburin A.S., Lotkov E.S., Rodionov I.A., Baryshev A.V.
- Журнал: International Journal of Hydrogen Energy
- Том: 82
- Год издания: 2024
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 767
- Последняя страница: 775
- DOI: 10.1016/j.ijhydene.2024.07.458
- Аннотация: The complex dielectric permittivity of tungsten oxide at all stages of its colouration in a hydrogen-rich atmosphere was retrieved from measured VIS-NIR ellipsometric spectra of WO3/Pd bilayer. The retrieval was done by fitting the spectra with the Cody-Lorentz dispersion model, and, for optical absorption features, two Gaussian functions were added. The band gap edge, the Gaussian center energies, amplitudes, spectral widths and integrals were traced as the redox reaction progressed. Analysis of obtained data provides insight into mechanism of surface and bulk oxygen vacancies formation. We discuss these peculiarities in detail and show how they do affect the optical constants of WO3–x and potential sensors’ response rates.
- Добавил в систему: Куликова Дарья Павловна