Sr1-xBaxAl2O4:Eu2+,Dy3+계 축광성 형광체의 합성과 그의 발광특성 = Synthesis and Photoluminescence of the Sr1-xBaxAl2O4:Eu2+,Dy3+ Long Phosphorescence Phosphor

다국어 초록 (Multilingual Abstract)

In this study, the Sr1-xBaxAl2O4:Eu2+,Dy3+phosphor were prepared by the solid-state reaction method and its photoluminescenceproperties were investigated. Starting powders of SrCO3, BaCO3, and Al2O3 were mixed with Eu2O3 as activator, Dy2O3 as co-activator and B2O3 as flux. Then, the mixed powders were heated at the temperature of 1100~1400oC for 3 h under the reducingambient atmosphere of 95%Ar+5%H2. The effect of Ba addition from 0.0 to 1.0 mol on photoluminescence was investigated. As theolBa. The optimum sintering condition for long phosphorescent phosphor of Sr1-xBaxAl2O4:Eu2+,Dy3+(x=0~1.0 mol) was found at1400oC. The excitation spectra showed a broad band of 250~450 nm with maximum peak at 360 nm. The maximum peak intensityof emission spectra occurred at the range of 480~520 nm, depending on Ba content.

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