Valences of dopants in Eu2+ persistent luminescence materials

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Abstract

The existence and effect of different rare earth (R2+/3+/IV) ions in SrAl2O4:Eu2+, R3+ and M2MgSi2O7:Eu2+, R3+ (M: Sr, Ba) persistent luminescence materials was studied with XANES (x-ray absorption near edge structure) measurements at HASYLAB/DESY (Hamburg, Germany) and MAX-lab (Lund, Sweden). The experiments were carried out at 298K for selected rare earth (co-) dopants (Eu2+; Ce3+, Nd3+, Sm3+, Dy3+ and Yb3+). The co-existence of Eu2+ and Eu3+ was observed in all materials. The co-dopants were always in the trivalent form.

Details

Authors
  • M. Lastusaari
  • H. F. Brito
  • Stefan Carlson
  • J. Holsa
  • T. Laamanen
  • L. C. V. Rodrigues
  • E. Welter
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Natural Sciences
  • Physical Sciences
Original languageEnglish
Article number044004
JournalPhysica Scripta
Volume89
Issue number4
Publication statusPublished - 2014
Publication categoryResearch
Peer-reviewedYes