Cation size dependence of phosphorescence lifetime of Eu2+ doped alkali halide crystals

R. Pérez-Salas*, T. M. Piters, R. Aceves, R. Rodríguez-Mijangos, H. Riveros, J. M. Hernández A., H. Murrieta S.

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Phosphorescence lifetimes of europium doped alkali halide crystals have been measured and compared with each other. The lifetime values resulted to be more influenced by the cation size following an increasing order from Li to Rb. The effect of covalency decrease from Li to Rb and the corresponding mixing of 4f7 and 4f65d states of europium ions suggests an influence of the low lying 6P7/2 level of the 4f 7 electronic configuration on the relaxation from the 4f 65d excited state to the 8S7/2 ground state.

Original languageEnglish
Pages (from-to)617-619
Number of pages3
JournalOptical Materials
Volume35
Issue number3
DOIs
StatePublished - Jan 2013

Bibliographical note

Funding Information:
This work has been partially supported by CONACyT project 123952 and Universidad de Sonora under PIFI-2009 and project P/MAA-2008-18.

Keywords

  • Alkali halides
  • Europium
  • Lifetime
  • Luminescence

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