Morphological and optical characteristics of Y2O3:Eu phosphor particles prepared by flame spray pyrolysis

Yun Chan Kang, Dae Jong Seo, Seung Bin Park, Hee Dong Park

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54 Citations (Scopus)

Abstract

Y2O3:Eu phosphor particles were prepared by flame spray pyrolysis and compared with the particles prepared by general spray pyrolysis. The particles prepared by flame spray pyrolysis had a spherical and dense morphology and were finer than the particles prepared by general spray pyrolysis. Flame temperature was an important factor in the preparation of the phosphor particles by flame spray pyrolysis. To obtain Y2O3:Eu particles with a uniformly dense structure, a sufficiently high temperature to form monoclinic phase was required. Too low flame temperature generated nonspherical and hollow particles with cubic phase because the particles did not melt completely, and too high flame temperature of flame generated many nanoparticles due to evaporation. After stepwise post-treatment of as-prepared particles with monoclinic phase and the dense structure, Y2O3:Eu phosphor particles with high brightness and cubic phase were obtained. The Y2O3:Eu phosphor particles prepared by flame spray pyrolysis showed 120% photoluminescence intensity in comparison with the particles prepared by general spray pyrolysis.

Original languageEnglish
Pages (from-to)4083-4086
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume40
Issue number6 A
Publication statusPublished - 2001 Jun 1

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Keywords

  • Europium
  • Fine particle
  • Flame
  • Phosphor
  • Spray pyrolysis
  • Yttrium oxide

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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