Europium doped strontium borate glasses and their optical properties

A. S. Aleksandrovsky, A. S. Krylov, A. V. Malakhovskii, A. M. Potseluyko, A. I. Zaitsev, A. V. Zamkov

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28 Scopus citations

Abstract

Optical absorption and luminescence spectra of europium doped strontium borate glasses prepared in different conditions are studied. It is found that the percentage of Eu3+ ions varies from 100 to 30% being controlled by the conditions of preparation. The mechanism, favoring reduction of europium to Eu2+ state in polycrystalline strontium tetraborate, is much weaker in glasses of the same composition. In samples containing mixed valence europium at densities of 8×1020 cm-3, the efficient transfer of optical excitation from Eu3+ to Eu2+, suppressing the Eu3+ luminescence, has been found. The most reliable way of monitoring the percentage of europium ions in different valences for strontium borate glasses is the measuring of absorption at f-f transition 7F05D2 of Eu3+.

Original languageEnglish
Pages (from-to)75-79
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume66
Issue number1
DOIs
StatePublished - Jan 2005

Bibliographical note

Funding Information:
A.V. Malakhovskii is grateful to the Israel Ministry of Absorption for a KAMEA scholarship. This work has been partially supported by Russian Foundation for Basic Research (Grant No. 02-02-16428), by Russian Ministry of Industry and Science (Grant NSH-939.2003.2) and by the Program of the Russian Academy of Sciences (Project No. 9). A.S. Krylov and A.M. Potseluyko are also grateful for the support from Russian Science Support Foundation.

Keywords

  • A. Non-crystalline materials
  • A. Optical materials
  • D. Optical properties

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