• Title/Summary/Keyword: 초임계의

Search Result 694, Processing Time 0.033 seconds

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;Hong, Seok-Hyoung;Lim, Dae-Young;Nho, Jun-Seok;Cho, Seung-Beom
    • Journal of the Korean Ceramic Society
    • /
    • v.39 no.11
    • /
    • pp.1023-1027
    • /
    • 2002
  • 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.