Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparation of SrTiO3: Pr3+ Phosphors Using Supercritical Fluid Method and its Luminescence Properties

초임계 유체법에 의한 SrTiO3: Pr3+ 형광체 분말 제조 및 발광특성

  • Choi, Keun-Mook (Department of Materials Engineering, Paichai University) ;
  • Hong, Seok-Hyoung (Department of Materials Engineering, Paichai University) ;
  • Lim, Dae-Young (Department of Materials Engineering, Paichai University) ;
  • Nho, Jun-Seok (Advanced Materials Research Institute, Research Park, LG chemical Ltd.) ;
  • Cho, Seung-Beom (Advanced Materials Research Institute, Research Park, LG chemical Ltd.)
  • 최근묵 (배재대학교 재료공학과) ;
  • 홍석형 (배재대학교 재료공학과) ;
  • 임대영 (배재대학교 재료공학과) ;
  • 노준석 (LG 화학기술연구원 신소재연구소) ;
  • 조승범 (LG 화학기술연구원 신소재연구소)
  • Published : 2002.01.01
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Abstract

In this paper, we have prepared phase-pure $SrTiO_3:\;Pr^{3+}$ phosphor powder by Supercritical Fluid Mixing using $Sr(OH)_2{\cdot}8H_2O$ and $TiO_2$ powders as starting materials. Its luminescent properties were investigated in comparison with $SrTiO_3:\;Pr^{3+}$ powders prepared by solid-state method with conventional mixing. $SrTiO_3:\;Pr^{3+}$ phosphor powders by Supercritical Fluid Mixing have spherical shapes and narrow particle size distribution. We have investigated the luminescent properties of $SrTiO_3:\;Pr^{3+}$ phosphor using $Al^{3+}$ and $Ga^{3+}$ as sensitizer.

본 연구에서는 초임계 mixing을 이용하여 $SrTiO_3:\;Pr^{3+}$ 형광체 분말을 제조하였으며, 일반적 제조 방법인 고상법으로 제조된 분말과 발광특성을 비교하였다. 초임계 mixing에 의해 제조된 $SrTiO_3:\;Pr^{3+}$ 형광체 분말은 단상의 perovskite 구조를 갖으며, 형상은 구형인 좁은 입도분포를 보인다. 발광특성의 증대를 sensitizer인 $Al^{3+}$과 $Ga^{3+}$을 첨가하여 형광체의 발광특성을 관찰하였다.

Keywords

References

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