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BAM:Mn Phosphor Prepared from Spray Solution with Colloidal Silica

실리카 함유 콜로이달 분무용액으로부터 합성된 BAM:Mn 형광체

  • Ju, Seo-Hee (Department of Chemical Engineering, Konkuk University) ;
  • Koo, Hye-Young (Department of Chemical Engineering, Konkuk University) ;
  • Hong, Seung-Kwon (Department of Chemical Engineering, Konkuk University) ;
  • Kim, Do-Youp (Department of Chemical Engineering, Konkuk University) ;
  • Kang, Yun-Chan (Department of Chemical Engineering, Konkuk University)
  • Published : 2006.02.27

Abstract

[ $BaMgAl_{10}O_{19}:Mn^{2+}$ ](BAM:Mn) phosphor particles with spherical shape were prepared by spray pyrolysis from colloidal solution with silica. The phosphor particles prepared by spray pyrolysis from aqueous solution had irregular morphology after high temperature post-treatment. On the other hand, the phosphor particles prepared from spray solution with colloidal silica had spherical shape after post-treatment. Colloidal silica used as additive improved the spherical shape and filled morphology of the precursor particles prepared by spray pyrolysis. The precursor particles with filled structure produced the BAM:Mn phosphor particles with spherical shape and non-aggregation characteristics after post-treatment at $1400^{\circ}C$ under reducing atmosphere. The phosphor particles prepared from colloidal solutions formed the crystal structure of BAM:Mn phosphor irrespective of the silica contents. The BAM:Mn phosphor particles prepared from aqueous and colloidal solutions had similar photoluminescence intensities under vacuum ultraviolet.

Keywords

References

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