Photoluminescence properties of Ce 1-xTb xMgAl 11O 19 phosphor particles prepared by spray pyrolysis

Yun Chan Kang, Seung Bin Park, I. Wuled Lenggoro, Kikuo Okuyama

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Spray pyrolysis method was applied to the preparation of submicron Ce 1-xTb xMgAl 11O 19 phosphor particles. The characteristics such as photoluminescence, crystallinity, and morphology were investigated under various preparation conditions. While the as-prepared particles by spray pyrolysis at temperature of 900°C had amorphous phase, the particles calcined above 1400°C had phase-pure magnetoplumbite structure, and its crystallinity increased with increasing the calcining temperature. The as-prepared particles had spherical morphology, submicron size, and narrow size distribution. The mean size of the particles increased from 0.5 to 1.4 μm when the spray solution concentration increased from 0.03 to 1.5 M. After calcination, the particles showed 545 nm green emission characteristic of Tb 3+ ions with optimum excitation at 280 μm. The maximum luminous intensity was obtained at x = 0.4. The optimum calcining temperature for good brightness was 1500°C. Particles directly prepared by spray pyrolysis at 1500°C show good green emission characteristics and maintain its sphericity and non-aggregation characteristics.

Original languageEnglish
Pages (from-to)2013-2016
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume38
Issue number4 A
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • Fine particles
  • Magnetoplumbite structure
  • Phosphor
  • Photoluminescence
  • Plasma display panel
  • Spray pyrolysis

ASJC Scopus subject areas

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

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