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 journalArticle

23 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 1
Externally publishedYes

Keywords

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

ASJC Scopus subject areas

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

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    Roh, H. S., Cho, I. S., An, J. S., Cho, C. M., Noh, T. H., Yim, D. K., Kim, D-W., & Hong, K. S. (2012). Enhanced photoluminescence property of Dy3+ co-doped BaAl 2O4: Eu2+ green phosphors. Ceramics International, 38(1), 443-447. https://doi.org/10.1016/j.ceramint.2011.07.025