Improved photoluminescence and afterglow in CaTiO3:Pr 3 with addition of nanosized SiO2

Xianmin Zhang, Chunyan Cao, Chenghua Zhang, Li Chen, Jiahua Zhang, Xiao Jun Wang

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Enhancement of the 1D23H4 red emission in CaTiO3:Pr3 with addition of nanosized SiO 2 fabricated by a solid state reaction method is reported. The dynamical processes for the improvement of red emission were systematically investigated using photoluminescence (PL) and PL excitation spectra, and diffused reflectance spectra as well as time decay patterns of PL and persistent afterglow. Higher efficiency of energy transfer from CaTiO3 host to the activator Pr3 due to the improvement of crystallinity by SiO 2 addition was discussed in comparison with that of the SiO 2 free sample. The enhancement of persistent afterglow after the cessation of excitation in SiO2 added CaTiO3:Pr 3 was also analyzed by theoretically fitted results.

Original languageEnglish
Pages (from-to)3891-3895
Number of pages5
JournalPhysica B: Condensed Matter
Volume406
Issue number20
DOIs
Publication statusPublished - 2011 Oct 15
Externally publishedYes

Keywords

  • Afterglow
  • CaTiO
  • Photoluminescence
  • Pr

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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