Formation of BaMgAl10O17:Eu phosphor particles with spherical shape and filled morphology in the flame spray pyrolysis

Jung Sang Cho, Seung Kwon Hong, Dae Soo Jung, Jin Man Han, Yun Chan Kang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Fine-sized, spherical BaMgAl10O17:Eu2+ phosphor particles with filled morphologies were prepared by flame spray pyrolysis. Precursor particles prepared by flame spray pyrolysis at a low-temperature diffusion flame and a short particle residence time within the diffusion flame were of large size and had hollow structures. On the other hand, precursor particles prepared at optimum preparation conditions were fine sized, had filled structures, and narrow size distributions. The melting of large-sized intermediate particles with hollow structures within the high-temperature diffusion flame formed fine-sized, spherical precursor particles with filled structures. The BaMgAl10O17:Eu 2+ phosphor particles prepared by flame spray pyrolysis at optimum preparation conditions were fine-sized and had regular morphologies after post-treatment at 1400°C. The mean size of the BaMgAl10O 17: Eu2+ phosphor particles was 1.0μm. The photoluminescence intensity of fine-sized, spherical BaMgAl10O 17: Eu2+ phosphor particles with filled structures was higher than that of large-sized phosphor particles with hollow structures excited by the vacuum ultraviolet light at the wavelength, 147 nm.

Original languageEnglish
Pages (from-to)530-535
Number of pages6
JournalJournal of the Ceramic Society of Japan
Volume115
Issue number1345
DOIs
Publication statusPublished - 2007 Jan 1
Externally publishedYes

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Keywords

  • Aluminate
  • Flame spray pyrolysis
  • Phosphor
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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