利用简单的高温固相法合成稀土离子掺杂的NaLn4-x(SiO4)3F∶xRE3+(Ln=La, Gd; RE=Tb, Dy, Sm, Tm)系列荧光粉, 利用X射线粉末衍射仪和荧光分光光度计分别测试其物相结构和荧光性能。结果表明, 所合成样品均为纯的六方晶系结构, 在紫外光激发下所合成样品均表现出所掺杂稀土离子的f-f特征能级跃迁, Tb3+、Dy3+、Sm3+和Tm3+等激活离子分别发出蓝绿色、白色、橙色以及蓝色等荧光发射。

A series of NaLn4-x(SiO4)3F∶ xRE3+ (Ln=La, Gd; RE=Tb, Dy, Sm, Tm) phosphors were synthesized by the conventional solid-state reaction at 950 ℃ for 2 h. The samples were characterized by X-ray diffraction (XRD) and photoluminescence (PL) spectra. The experimental results indicate that all the obtained-samples are pure hexagonal phase. Under UV light excitation, the doped rare earth ions (Tb3+, Dy3+, Sm3+ and Tm3+) phosphor give blue-green, white, orange, and blue emission, respectively.