Photoluminescence of LiF Crystals Doped with Oxygen-Containing Impurities

Vladimir I. Korepanov; Pavel V. Petikar; Guang Hui Ge; Anna A. Lipovka

doi:10.4028/www.scientific.net/KEM.769.141

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 769Photoluminescence of LiF Crystals Doped with...

Photoluminescence of LiF Crystals Doped with Oxygen-Containing Impurities

Abstract:

The aim of this paper is to study the photoluminescence spectra and photoluminescence excitation spectra in LiF-O, LiF-WO₃ and LiF-TiO₂ crystals at 20-300 K. It is shown that the luminescence centers in LiF-WO₃ and LiF-TiO₂ crystals are oxygen ions O^2-disturbed by defects. Two absorption bands within 6-4.5 eV and two luminescence bands with maxima at 3.1 eV and 2.64 eV correspond to these centers. The absorption and emission spectra of the oxygen center (3.1 eV luminescence band) are close to those for the (O^2-- V_a) center.

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Periodical:

Key Engineering Materials (Volume 769)

Pages:

141-145

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.769.141

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Online since:

April 2018

Authors:

Vladimir I. Korepanov, Pavel V. Petikar*, Guang Hui Ge, Anna A. Lipovka

Keywords:

Impurity, LiF Crystals, Luminescence, Oxygen Center

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References

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