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中文摘要：
以廉价的MgCl2和NH4F为原料用乳胶法在纳米BaMgAl10O17：Eu^2＋（BAM）蓝色荧光粉颗粒表面成功地包覆了一层均匀致密的MgF2包覆层。利用XRD、XPS、TEM和EDS对纳米BAM包覆颗粒的化学成分和微观结构进行了表征，并通过真空紫外激发光谱测试了其光谱特性。结果表明，MgF2包覆层紧密地附着在BAM颗粒表面，包覆层对BAM纳米颗粒表面起到了很好的修饰作用，有效降低了BAM荧光粉的无辐射跃迁机率，使BAM的发光性能得到明显改善。
英文摘要：
Taking the use of cheap MgC12 and NI-I4F as raw materials, MgF2 was successfully coated at the surface of nano-sized BaMgAl10O17：Eu^2＋ phosphor particles by an emulsion method. The chemical compositions, microstructure, and luminescent performance of surface-coating BAM were characterized by XRD, XPS, TEM, EDS and VUV excitation, respectively. The results indicate that a compact homogeneous MgF2 film successfully forms on the surface of BAM particles. The luminescent performances of BAM with perfect surface modification is greatly improved due to the hanging-bonds and defects on the surface of nano-scale BAM particles being removed as well as non-radiative transition probability decreasing.
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