Investigation of the influence of silver and tin on the luminescence of trivalent europium ions in glass

J. A. Jiménez, S. Lysenko, H. Liu, E. Fachini, C. R. Cabrera

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Abstract

Europium-doped aluminophosphate glasses prepared by the melt-quenching technique have been studied by photoluminescence (PL) and X-ray photoelectron spectroscopy (XPS). The effects of silver and tin doping, and of further thermal processing on Eu3+ ions luminescence have been assessed. For the glass system containing only europium, Eu3+ PL observed under UV excitation is suggested to occur through energy transfer from the excited glass host. After silver and tin doping, an enhanced UV excited Eu3+ PL has been indicated to occur essentially due to radiative energy transfer from isolated Ag+ ions and/or two fold-coordinated Sn centers. Since thermal processing of the material leads to a quenching effect on Eu3+ PL and Ag nanoparticles (NPs) formation due to reduction of silver ions by tin, XPS was employed in order to investigate the possibility for Eu3+→Eu2+ reduction during HT as a potential source of the PL decrease. The data points towards Ag NPs as main responsible for the observed weakening of Eu3+ PL.

Original languageEnglish (US)
Pages (from-to)163-167
Number of pages5
JournalJournal of Luminescence
Volume130
Issue number1
DOIs
StatePublished - Jan 1 2010

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Keywords

  • Europium
  • Nanoparticles
  • Photoluminescence
  • Silver
  • Tin
  • X-ray spectroscopy

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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