Effects of the characteristics of precursor powders and AlF3 flux on the properties of blue-emitting BAM:Eu phosphor powders

Jung Sang Cho, Sang Ho Lee, Yun Chan Kang

Research output: Contribution to journalArticle

Abstract

Blue-emitting BAM:Eu phosphor powders were formed by post-treatment of precursor powders with hollow or dense morphologies. The morphologies of the precursor powders obtained by spray pyrolysis were controlled by changing the preparation conditions and by changing the type of spray solution. The effects of the morphologies of the precursor powders on the characteristics of the BAM: Eu phosphor powders reacted with AlF3 flux were investigated. Precursor powders with a spherical shape and a hollow morphology produced BAM: Eu phosphor powders with a plate-like morphology, a fine size and a narrow size distribution. On the other hand, precursor powders with a spherical shape and dense morphology produced BAM: Eu phosphor powders with a plate-like morphology and a large size. AlF3 flux improved the photoluminescence intensities of the BAM: Eu phosphor powders. The photoluminescence intensity of the fine-sized BAM: Eu phosphor powders with a plate-like morphology was 90% of the commercial product under vacuum ultraviolet conditions.

Original languageEnglish
Pages (from-to)137-142
Number of pages6
JournalKorean Journal of Materials Research
Volume18
Issue number3
DOIs
Publication statusPublished - 2008 Mar 1
Externally publishedYes

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Keywords

  • Display materials
  • Flux material
  • Phosphor
  • Spray pyrolysis

ASJC Scopus subject areas

  • Materials Science(all)

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