Terbium-doped lanthanum phosphate phosphor particles with a submicrometre size and spherical shape

Jin Man Han, Hye Young Koo, Jung Sang Cho, Dae Soo Jung, Yun Chan Kang

Research output: Contribution to journalArticle

Abstract

Submicrometre-sized LaPO4:Tb phosphor particles with a spherical shape and filled morphology were prepared by spray pyrolysis from a polymeric precursor solution containing citric acid and ethylene glycol. The LaPO 4: Tb phosphor particles obtained from the aqueous spray solution had a hollow morphology and large size because of the high drying and decomposition rates of droplets. The mean sizes of the particles obtained from the aqueous spray and polymeric precursor solutions were each 1 and 0.8 μm, respectively. The optimum post-treatment temperature for the preparation of LaPO 4:Tb phosphor particles with a spherical shape and high brightness was 1100°C. The prepared LaPO4:Tb phosphor particles had high photoluminescence intensities under vacuum ultraviolet illumination of 147 nm.

Original languageEnglish
Pages (from-to)359-363
Number of pages5
JournalJournal of Ceramic Processing Research
Volume8
Issue number5
Publication statusPublished - 2007 Dec 14
Externally publishedYes

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Keywords

  • Display material
  • Phosphate
  • Phosphor
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites

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