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Influence of Oxygen Vacancies on the Luminescence Spectra of Y2O3 Thin Films

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Abstract

Luminescence spectra of Y2O3 thin films annealed in air and in vacuum are investigated. It is established that the presence of oxygen vacancies leads to a decrease in the intensity of the luminescence band with a maximum at 3.4 eV (related to emission of self‐localized Frenkel excitons describing the excited state of a molecular ion (YO6)9−) and of the luminescence band with a maximum at 2.9 eV (related to the anion sublattice). It is revealed that the oxygen vacancies also lead to a decrease in the luminescence intensity in the 2.60, 2.35, 2.10. 1.90, and 1.70 eV bands that are related to radiative recombination in the donor–acceptor Y3+–O2− pairs. The donor–acceptor distances are calculated.

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  1. I. Franko L'vov National University, 50 Dragomanov Str., L'vov, 79005, Ukraine

    O. M. Bordun

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  1. O. M. Bordun
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Bordun, O.M. Influence of Oxygen Vacancies on the Luminescence Spectra of Y2O3 Thin Films. Journal of Applied Spectroscopy 69, 430–433 (2002). https://doi.org/10.1023/A:1019763518857

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  • DOI: https://doi.org/10.1023/A:1019763518857

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