Nano-sized Y2O3:Eu phosphor particles prepared by spray pyrolysis

Chang Hee Lee, Kyung Youl Jung, Joong Gill Choi, Yun Chan Kang

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Y2O3:Eu phosphor particles with nano-sized and non-aggregation characteristics were prepared by spray pyrolysis using spraying solution containing polymeric precursors and Li2CO3 flux material. The post-treated phosphor particles with fine size and high brightness were ball milled to reduce the aggregation degree of the nano-sized Y 2O3:Eu phosphor particles. The mean particle size, morphology, and brightness of Y2O3:Eu phosphor particles were strongly affected by contents of the additives and post-treatment temperature. The Y2O3:Eu phosphor particles prepared from the solution containing 0.3 M citric acid, 0.3 M ethylene glycol and 5 wt.% Li2CO3 had fine size and good morphology after post-treatment. The Y2O3:Eu phosphor particles post-treated at 1000°C for 3 h had the mean size of 300nm. Nano-sized Y 2O3:Eu phosphor particles prepared by spray pyrolysis had similar photoluminescence intensity to the micron-sized Y2O 3:Eu commercial product prepared by solid state reaction method. The Y2O3:Eu phosphor particles had aggregation-free and regular morphology characteristics even after 30 min ball milling process.

Original languageEnglish
Pages (from-to)59-63
Number of pages5
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume116
Issue number1
DOIs
Publication statusPublished - 2005 Jan 15
Externally publishedYes

Keywords

  • Display
  • Nano-particles
  • Phosphor
  • Spray pyrolysis

ASJC Scopus subject areas

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

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