燃烧法合成掺铕硼酸镧钙荧光粉及其发光性能研究

A Study on Combustion Synthesis of La_2CaB_(10)O_(19):Eu^(3+) and its Luminescence

采用燃烧法合成Eu:La2CaB10O19荧光体,用XRD、SEM并研究了所得荧光粉的形态、粒度和物相,用荧光分光光度计测定了荧光粉的发光性能并与高温固相法制备的粉体对比。结果表明Eu:La2CaB10O19荧光体的晶体结构属于单斜晶系结构。燃烧后所得的前驱体样品在800℃下烧结1.5 h便具有很好的晶相,制备产物粒度在300 nm左右,在395 nm激发下的发射强度跟高温固相法制备的Eu:La2CaB10O19强度接近。

The samples Eu-dope La2CaB10O19 were prepared by combustion method.The Eu：La2CaB10O19 were characterized by XRD,SEM and fluorescence spectroscopy.The results showed that crystal configuration of Eu：La2CaB10O19 phosphor was monoclinic structure.The phase-pure Eu：La2CaB10O19 were obtained after the precursor were sintered at 800 ℃ for 1.5 h.The phosphors was about 300 nm,and the intensity of emission of phosphors prepared by combustion method was as much as the phosphors prepared by the solid-state reaction technique at 395 nm.