碱土、稀土元素掺杂对Y(VP)O_4∶Eu^(3+)荧光粉发光性能的影响

Luminescence Properties of Y(VP)O_4∶Eu^(3+) Phosphor Doped with Alkali Earths and Rare Earths

采用共沉淀法制备了高亮度红色荧光粉YAx(VP)O4∶Eu3+、Y0.94-yLny(VP)O4∶Eu03.+06(A=Mg,Ca,Sr,Ba;Ln=La,Ga),通过X射线衍射(XRD)、扫描电镜(SEM)、荧光光谱分析仪等测试方法对样品进行了研究。结果表明:选择合适的实验条件,可以制得颗粒分布均匀、表面光滑的Y(VP)O4∶Eu3+荧光粉,其发射峰位于620nm,是现有PDP商品(Y,Gd)BO3∶Eu3+荧光粉的良好替代品。

High brightness red phosphor YAx（VP）O4∶Eu3＋ and Y0.94-yLny（VP）O4∶Eu3＋0.06（A=Mg,Ca,Sr,Ba;Ln=La,Ga） particles were prepared by coprecipitation process.The sample was investigated by X-ray diffraction（XRD）,scanning electron microscope（SEM）,excitation spectra and emission spectra.The particles were spherical shape.Aggregation between particles was not observed.The phosphor particles had very high emission intensity.The main excitation peak of the particles was 300 nm.The main peak for the emission spectra was 620 nm.Emission intensity of YAx（VP）O4∶Eu3＋ phosphor doped with little Sr and Ba could be improved.Emission intensity of YAx（VP）O4∶Eu3＋ phosphor showed a decreasing trend with Ca and Mg.Emission intensity of Y0.94-yLny（VP）O4∶Eu3＋0.06（Ln=La,Ga） could be improved evidently when doped with La3＋ and Ga3＋.The phosphor showed red emission with good color purity under 300 nm light excitation.This phosphor is a good substitution for（Y,Gd）BO3∶Eu3＋ in PDP.