Morphology and luminescence of (GdY)2O3:Eu particles prepared by colloidal seed-assisted spray pyrolysis

Hyun Sook Roh, Yun Chan Kang, Seung Bin Park

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

(Gd(x)Y(1)-(x))2O3:Eu [x = 0, 0.25, 0.5, 0.75, 1.0] phosphor particles with 6 at.% Eu dopant of total concentration were prepared using spray pyrolysis. The effects of composition on the morphology, crystallinity, and photoluminescence characteristics of composite particles were investigated. The morphological control of (Gd(x)Y(1)-(x))2O3:Eu particles in spray pyrolysis was also attempted by using colloidal and aqueous solutions. The particles prepared from colloidal solutions containing small amounts of Gd or Y hydroxy carbonate sol as seed material had spherical and filled morphology after the post-treatment at high temperature. On the other hand, the (Gd(x)Y(1)-(x))2O3:Eu particles prepared from aqueous solutions were hollow and porous after post-treatment in all compositions. Particles prepared from colloidal solutions had photoluminescence emission intensities higher than those of particles prepared from aqueous solutions. (C) 2000 Academic Press.

Original languageEnglish
Pages (from-to)195-199
Number of pages5
JournalJournal of Colloid and Interface Science
Volume228
Issue number2
DOIs
Publication statusPublished - 2000 Aug 15

Keywords

  • Gadolinium oxide
  • Phosphor particle
  • Spray pyrolysis
  • Yttrium oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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