Combustion synthesis and luminescence investigation of Na3Al2(PO4)3:RE (RE = Ce3+, Eu3+ and Mn2+) phosphor

I. M. Nagpure, K. N. Shinde, Vinay Kumar, O. M. Ntwaeaborwa, S. J. Dhoble, H. C. Swart

Research output: Contribution to journalArticlepeer-review

104 Citations (Scopus)

Abstract

Rare-earth (Ce3+or Eu3+) or alkali-earth metal (Mn2+) doped Na3Al2(PO4)3 phosphor powder were prepared by a combustion method. Regardless of the dopants, the Na3Al2(PO4)3 was shown to crystallize as hexagonal (rhombohedral) NASICON phase with spheroidal micron sized particles based upon X-ray diffraction (XRD) and scanning electron microscopy (SEM) data. As confirmed by thermogravimetric (TGA) and differential thermal analysis (DTA) data, the powders were stable at high temperatures up to 900 °C. A broad UV emission (with maximum at 328 nm) associated with the 5d → 4f transition of Ce3+ was observed from Na3Al2(PO4)3:Ce3+ while Mn2+ and Eu3+ doping showed stable green and red photoluminescence emission at 515 and 615 nm, respectively. For different molar concentrations of rare-earth/alkali-earth metal dopants, the PL intensity was shown to increase to a certain concentration before quenching occurred at higher concentrations. The structure and optical properties of these phosphors were evaluated.

Original languageEnglish
Pages (from-to)384-388
Number of pages5
JournalJournal of Alloys and Compounds
Volume492
Issue number1-2
DOIs
Publication statusPublished - 4 Mar 2010
Externally publishedYes

Keywords

  • DTA
  • Lamp phosphor
  • NASICON
  • Phosphor
  • Photoluminescence
  • Scintillators
  • TGA
  • XRD

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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