Improving Thermal Stability of BaMgAl10O17:Eu Phosphor
来源期刊：Journal of Rare Earths2006年第S1期
论文作者：梁超 张超 董岩 曹同 蒋建清 何锦华
文章页码：153 - 156
摘 要：<正>Heterogeneous precipitation method was used to prepared surface coating on self-made BaMgAl10O17 : Eu phosphor. Results illustrate that the coating film can be silicon dioxide in amorphous state with 50 nm in thickness. Photolumi-nescence results indicate that the coating layer presents an observable improved effect on the enhancement of thermal stability. When baked at 600℃for 1 h, the luminance of coated BAM keeps at 92% higher than that of uncoated BAM by 23% . This protective effect can be attributed to the high compact degree and uniformity of this amorphous SiO2 coating film which is served as a diffusion block layer to inbreak oxygen atom, thus releases the oxidation extent of Eu2 + effectively.
梁超，张超，董岩，曹同，蒋建清，何锦华
摘 要：<正>Heterogeneous precipitation method was used to prepared surface coating on self-made BaMgAl10O17 : Eu phosphor. Results illustrate that the coating film can be silicon dioxide in amorphous state with 50 nm in thickness. Photolumi-nescence results indicate that the coating layer presents an observable improved effect on the enhancement of thermal stability. When baked at 600℃for 1 h, the luminance of coated BAM keeps at 92% higher than that of uncoated BAM by 23% . This protective effect can be attributed to the high compact degree and uniformity of this amorphous SiO2 coating film which is served as a diffusion block layer to inbreak oxygen atom, thus releases the oxidation extent of Eu2 + effectively.
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