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

Research output: Contribution to journalArticle

40 Scopus citations

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
Externally publishedYes

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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