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Synthesis of YAG:Ce3+ Phosphor Powders by Polymer Solution Route and Alumina Seed Application

폴리머용액법 및 알루미나 seed를 도입한 YAG:Ce3+ 형광체 분말 합성

  • Kim, Yong-Hyeon (Department of Advanced Materials Science and Engineering, Mokpo National University) ;
  • Lee, Sang-Jin (Department of Advanced Materials Science and Engineering, Mokpo National University)
  • 김용현 (국립목포대학교 신소재공학과) ;
  • 이상진 (국립목포대학교 신소재공학과)
  • Received : 2013.01.23
  • Accepted : 2013.02.25
  • Published : 2013.02.28

Abstract

$YAG:Ce^{3+}$ phosphor powders were synthesized using a $Al_2O_3$ seed (average particle size: 5 ${\mu}m$) by the polymer solution route. PVA solution was added to the sol precursors consisting of the seed powder and metal nitrate salts for homogeneous mixing in atomic scale. All dried precursor gels were calcined at $500^{\circ}C$ and then heated at $1400^{\circ}C{\sim}1500^{\circ}C$ in $N_2/H_2$ atmosphere. The final powders were characterized by using XRD, SEM, PSA, PL and PKG test. All synthesized powders were crystallized to YAG phase without intermediate phases of YAM or YAP. The phosphor properties and morphologies of the synthesized powders were strongly dependent on the PVA content. Finally, the synthesized $YAG:Ce^{3+}$ phosphor powder heated at $1500^{\circ}C$, which is prepared from 12:1 PVA content and has an average particle size of 15 ${\mu}m$, showed similar phosphor properties to a commercial phosphor powder.

Keywords

References

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