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 journalArticlepeer-review

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
Externally publishedYes

Keywords

  • Ceramic
  • Phosphor
  • Spray Pyrolysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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