Energy transfer in Ba1-xSrxFBr:Eu storage phosphors as a function of Sr and Eu concentration

P. Hackenschmied, H. Li, E. Epelbaum, R. Fasbender, M. Batentschuk, A. Winnacker

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The influence of Eu doping on the energy transfer processes in BaFBr and Ba0.82Sr0.18FBr is investigated. A study of the phosphor efficiency under excitation into the F(Br-) and FA(Br-, Sr2+) bands as well as excitation of the 4f7 → 4f65d (4.5eV) Eu2+ transition and X-ray excitation are presented. The conditions and limits for the concentration quenching Eu2+ in BaFBr and Ba0.82Sr0.18FBr were established. The mechanism of the enhancement of photostimulation luminescence (PSL) intensity with the addition of Sr was established. It was shown that Sr2+ stabilizes hole centers at room temperature in a similar way as Eu2+.

Original languageEnglish
Pages (from-to)669-674
Number of pages6
JournalRadiation Measurements
Volume33
Issue number5
DOIs
StatePublished - Jan 1 2001
Externally publishedYes

Keywords

  • Activator concentration
  • Efficiency
  • Photostimulated luminescence
  • Storage phosphor

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