Direct synthesis of high-brightness (CeTb)MgAl11O19 phosphor particles by spray pyrolysis with boric acid flux

Dae Soo Jung, Seung Kwon Hong, Seo Hee Ju, Hye Young Koo, Yun Chan Kang

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

High-brightness (CeTb)MgAl11O19 (CTMA) phosphor particles were directly prepared by high temperature spray pyrolysis. The boric acid flux added into spray solution affected the morphology and photoluminescence intensity of the CTMA phosphor. The phosphor particles prepared from spray solution with 20wt% boric acid of the product had a spherical shape and a filled morphology at 1600°C. The phosphor particles prepared by spray pyrolysis from spray solution without flux material under reducing atmosphere at 1600°C had high photoluminescence intensities under ultraviolet. The boric acid flux improved the photoluminescence intensities of the CTMA phosphor. The maximum photoluminescence intensity of the phosphor particles prepared from spray solution with an optimum amount of added boric acid flux was 114% of that of the phosphor particles prepared from spray solution without flux material. The particles directly prepared by spray pyrolysis from spray solution with 20 wt % boric acid of the product had a pure crystal structure of the CTMA phosphor.

Original languageEnglish
Pages (from-to)116-120
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number1 A
DOIs
Publication statusPublished - 2006 Jan 10
Externally publishedYes

Keywords

  • Flux material
  • Phosphor
  • Photoluminescence
  • Spray pyrolysis

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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