Photoluminescent properties of (La 1-xY x) 0.94Tb 0.06PO 4 phosphor powders prepared by ultrasonic spray pyrolysis

Y. Kwon, J. K. Lee, S. J. Kim, Sahn Nahm, K. Park

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4 Citations (Scopus)

Abstract

The calculated crystallite sizes of (La 1-xV x) 0.94Tb 0.06PO 4 (0 ≤ × ≤1.0) phosphors ranged from 37-39 nm. Annealed (La 1-xY x) 0.94Tb 0.06PO 4 (0 ≤ × ≤1.0) phosphors showed a smooth, regular, and spherical morphology. Strong excitation peaks were appeared at 226 and 270 nm for all the phosphors. These were caused by the crystal splitting of 7D and 9D of 4f 75pd 1 configuration in Tb 3+, respectively. The characteristic emission peaks were observed at 489, 543, 585, and 621 nm, which were caused by the 5D 4- 7F j (j = 6-3) transitions of Tb 3+, respectively. The emission intensity at 543 nm increased with an increase in Y content up to 0.5 and then decreased for a higher Y content.

Original languageEnglish
Pages (from-to)5499-5502
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume8
Issue number10
DOIs
Publication statusPublished - 2008 Oct 1

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Keywords

  • (La, Y)PO
  • Emission
  • Excitation
  • Phosphor
  • Tb
  • Ultrasonic spray pyrolysis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

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