溶胶-凝胶法合成掺铕硼酸镧钙荧光粉及其表征

首次采用溶胶-凝胶法制备Eu:La<,2>CaB<,10>O<19>,借助XRD、SEM和荧光光谱仪等测试手段对荧光粉进行表征与分析.结果表明,煅烧温度对产物的物相有较大影响,700℃煅烧前驱体12 h便具有单一晶相;800℃煅烧前驱体12 h得到的荧光粉,粒径为100 nm左右;用溶胶-凝胶制备的Eu:La<,2>L...

Preparation and Properties of Eu: La2CaB10O19 by Sol-gel Method

Firstly,the samples Eu-dope La2CaB10O19 were prepared by the sol-gel method.The Eu: La2CaB10O19 were characterized by XRD,SEM and fluorescence spectroscopy.The results showed that the sintering temperature had marked influence on the phase of the final powders,phase-pure Eu: La2CaB10O19 were obtained after the precursor were sintered at 700 ℃ for 12 h;the phosphors with grain sizes about 100 nm were obtained after the precursor were sintered at 800 ℃ for 12 h;the intensity of emission of phosphors prepared by sol-gel method was as much as the phosphors prepared by the solid-state reaction technique at 395 nm.