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用燃烧法和沉淀法制备橙红色Sr5(PO4)3X:Eu3+,Na+ (X = F,Cl)荧光粉

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Abstract:

分别采用沉淀法和以尿素为燃烧剂的燃烧法制备一系列可被近紫外光(393nm)激发的橙红色Sr5(PO4)3XxEu3+,xNa+(X=F,Cl)荧光粉。X射线粉末衍射分析和Fourier红外光谱测试结果表明合成样品为六方晶系Sr5(PO4)3X(X=F,Cl)。荧光光谱测试结果证明燃烧法合成样品的发光性能优于沉淀法的,并且Eu3+、Na+的共掺量变化没有改变基质发射光谱的分布,只是影响其发光强度,在Sr5(PO4)3F和Sr5(PO4)3Cl中Eu3+、Na+的最佳共掺量分别为x=0.20、x=0.15。尿素用量对发光强度影响的分析结果表明在Sr5(PO4)3F0.20Eu3+,0.20Na+荧光粉中,当摩尔比n(尿素)n(Sr2+)=21时,样品的发光强度最好。

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