Gd2O3:Eu phosphor particles prepared from spray solution containing boric acid flux and polymeric precursor by spray pyrolysis

Dae Soo Jung, Seung Kwon Hong, Hyo Jin Lee, Yun Chan Kang

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Micron size Gd2O3:Eu phosphor particles with spherical shape and dense morphology were prepared from spray solution containing boric acid, citric acid and polyethylene glycol by spray pyrolysis. Boric acid used as flux material was effective in improving the photoluminescence intensity of micron size Gd2O3:Eu phosphor particles prepared by spray pyrolysis. Boric acid did not affect on the morphology of the phosphor particles prepared from spray solution containing citric acid and polyethylene glycol after post-treatment at high temperature. The optimum content of boric acid in the preparation of Gd2O 3:Eu phosphor particles from spray solution containing polymeric precursors by spray pyrolysis was 1 wt.%. The optimum post-treatment temperature of Gd2O3:Eu phosphor particles showing the maximum photoluminescence intensity was 1050°C. The Gd2O3:Eu phosphor particles post-treated at 1050°C had complete spherical shape, non-aggregation characteristics and high crystallinity. The photoluminescence intensity of the Gd2O3:Eu phosphor particles prepared from spray solution containing polymeric precursors and boric acid flux was 149% of the phosphor particles prepared from spray solution without polymeric precursor and boric acid flux.

Original languageEnglish
Pages (from-to)530-535
Number of pages6
JournalOptical Materials
Volume28
Issue number5
DOIs
Publication statusPublished - 2006 Apr

Keywords

  • Flux material
  • Functional ceramic
  • Phosphor
  • Spray pyrolysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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