Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effects of the Characteristics of Precursor Powders and AlF3 Flux on the Properties of Blue-Emitting BAM:Eu Phosphor Powders

전구체의 특성 및 AlF3 융제가 청색 발광의 BAM:Eu 형광체의 특성에 미치는 영향

  • Cho, Jung-Sang (Department of Chemical Engineering, Konkuk University) ;
  • Lee, Sang-Ho (Department of Chemical Engineering, Konkuk University) ;
  • Kang, Yun-Chan (Department of Chemical Engineering, Konkuk University)
  • Published : 2008.03.25
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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 $AlF_3$ 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. $AlF_3$ 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.

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References

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