Enhanced photoluminescence property of Dy3+ co-doped BaAl 2O4:Eu2+ green phosphors

Hee Suk Roh, In Sun Cho, Jae Sul An, Chin Moo Cho, Tae Hoon Noh, Dong Kyun Yim, Dong Wan Kim, Kug Sun Hong

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

Eu2+-doped BaAl2O4 green phosphors were prepared by a conventional solid-state reaction and the effects of Dy 3+ co-doping on the photoluminescence property were investigated. The phosphors were characterized by X-ray powder diffraction (XRD), fluorescence spectroscopy, field-emission scanning electron microscopy (FESEM) and X-ray photoelectron spectroscopy (XPS). XRD showed that all prepared samples exhibited a hexagonal BaAl2O4 phase. Fluorescence spectroscopy showed that the photoluminescence efficiency increased with increasing Eu 2+ concentration until 3 mol% then decreased at higher concentrations due to concentration quenching effect. Moreover, Dy3+ co-doping increased the photoluminescence efficiency of the Eu2+-doped BaAl2O4 phosphor.

Original languageEnglish
Pages (from-to)443-447
Number of pages5
JournalCeramics International
Volume38
Issue number1
DOIs
Publication statusPublished - 2012 Jan
Externally publishedYes

Keywords

  • BaAlO:Eu
  • Dy co-doping effects
  • Optimum concentration
  • Phosphor
  • Photoluminescence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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