Effect of preparation temperature on the formation of Sr 2CeO4 phosphor particles in the spray pyrolysis

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

Research output: Contribution to journalArticle

Abstract

Sr2CeO4 phosphor particles were prepared by spray pyrolysis at various preparation temperatures. The effect of preparation temperatures on the morphology, crystal structure and photoluminescence characteristics of the post-treated Sr2CeO4 phosphor particles was studied. Phase pure Sr2CeO4 phosphor particles were not produced by spray pyrolysis without post-treatment The optimum post-treatment temperature to produce the Sr2CeO4 phosphor particles with high photoluminescence intensity was 1,000°C in spray pyrolysis. The spherical morphology of the as-prepared particles obtained at high preparation temperatures above 1,400°C had maintained after post-treatment at 1,000°C. The relative photoluminescence intensities of the Sr2CeO4 phosphor particles varied with the preparation temperatures in the spray pyrolysis. The as-prepared particles obtained by spray pyrolysis at preparation temperatures below 1,400°C converted into phase pure Sr2CeO4 phosphor particles after post-treatment at 1,000°C. The optimum preparation temperature of the as-prepared particles was 1,400°C to produce the Sr2CeO 4 phosphor particles with spherical shape and high photoluminescence intensity in the spray pyrolysis.

Original languageEnglish
Pages (from-to)496-498
Number of pages3
JournalKorean Journal of Chemical Engineering
Volume23
Issue number3
DOIs
Publication statusPublished - 2006 May 1
Externally publishedYes

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Keywords

  • Ceramic
  • Phosphor
  • Spray Pyrolysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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