中文摘要：

采用水热法制备红色荧光粉KLa(MoO4)2:Eu3+,通过X射线粉末衍射(XRD)、场发射扫描电镜(FE-SEM)和荧光光谱(PL)对样品进行了表征。实验结果表明:pH值是合成样品KLa(MoO4)2:Eu3+的关键因素,当溶液pH值接近7时,荧光粉的纯度较高,分散性良好、粒度均匀、呈规则球形。这种荧光材料可以被紫外光279 nm、近紫外光395 nm和蓝光465 nm有效激发,发射主峰位于617 nm,是一种可应用于白光LED转换用的新型红色荧光粉。

英文摘要：

Eu3 +-doped KLa(MoO4) 2 phosphor was prepared successfully via the hydrothermal process.And it was characterized by X-ray diffraction(XRD),field emission-scanning electron microscopy(FE-SEM) and photoluminescence(PL),respectively.The experimental results indicate that the pH values of the reaction solution have important effects on the phase structures and the morphologies of the products.A crystallization pH value of 7 was optimal.This phosphor can be effectively excited by 279,395,465 nm and emits red light at 617 nm with line spectra.The optical properties suggest that KLa(MoO4) 2:Eu3 + is an efficient red-emitting phosphor for white LEDs applications.