Effect of crystal structure and ions concentration on luminescence in Yb3+ and Tm3+ codoped fluoride microcrystals

Lili Wang, Chunyan Cao, Xiaojie Xue, Dan Zhao, Daisheng Zhang, Kezhi Zheng, Ning Liu, Feng Shi, Chunfeng He, Weiping Qin

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

A facile hydrothermal method is used for the preparation of Tm3+/Yb3+ codoped fluoride microphosphors. The effect of crystal structure and ions concentration on the spectra and lifetimes of the radiative levels of Tm3+ ions in the different fluoride microcrystals is studied in detail. XRD analysis of Tm3+/Yb3+ codoped LaF3 microcrystals shows that 20% Yb3+ doping is sufficient for hexagonal LaF3 microparticles to crystallize completely in the orthorhombic phase. And lifetime analysis suggests that the average lifetimes of the radiative levels of Tm3+ ions increased when the matrix phase structure changing from orthorhombic phase to hexagonal phase with ytterbium dopant concentration changing.

Original languageEnglish
Pages (from-to)1059-1062
Number of pages4
JournalJournal of Fluorine Chemistry
Volume130
Issue number11
DOIs
StatePublished - Nov 2009
Externally publishedYes

Keywords

  • Fluoride
  • Rare-earth
  • Upconversion

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