Microstructure and photoluminescent properties of BaY2ZnO 5:Tb3+ phosphors with addition of lithium carbonate

Huang Yu Chen, Ru Yuan Yang, Shoou Jinn Chang

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7 Citations (Scopus)


In this paper, Tb3+ activated BaY2ZnO5 phosphors with addition of lithium carbonates (0, 0.0125, 0.025, 0.05, 0.1, and 0.2 molar ratio) were synthesized using the solid-state reaction, and the morphology and photoluminescent properties are investigated. When BaY 2ZnO5:Tb3+ phosphors to which lithium carbonates were added were sintered at 1250 °C for 12 h, X-ray powder diffraction analysis showed that the un-reacted Y2O3 raw material decreased and scanning electron microscopy showed that the grain growth is improved. From PL studies, the photoluminescent properties were decreased when Li+ ion was added, which might be resulted from the increase of the oxygen vacancy in BaY2ZnO5:Tb3+ phosphors. The green emission of the BaY2ZnO5:Tb3+, Li+ phosphors showed the CIE chromaticity coordinates in the range of x = 0.3361-0.3510 and y = 0.5202-0.5492.

Original languageEnglish
Pages (from-to)375-379
Number of pages5
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Issue number6
Publication statusPublished - 2013 Apr 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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