摘要
分别采用尿素辅助共沉淀法和溶胶凝胶法制备Eu^(3+)掺杂Lu_2SiO_5(Lu_2SiO_5∶Eu^(3+))粉体,对比分析了煅烧温度对粉体物相组成和微观形貌的影响以及Eu^(3+)掺杂量对粉体发光性能的影响.结果表明:两种方法均可制得纯度较高的Lu_2SiO_5粉体,但溶胶凝胶法可以得到单相纯Lu_2SiO_5粉体,而尿素辅助共沉淀法所得粉体中含有少量Lu2O3杂质相;溶胶凝胶法所得粉体的粒径为200~300nm,且粉体颗粒的表面比尿素辅助共沉淀法制得的粗糙;当Eu^(3+)掺杂量(物质的量分数)为5%时,两种方法所得Lu_2SiO_5∶Eu^(3+)粉体的发光强度均达到最大,且溶胶凝胶法所得Lu_2SiO_5∶Eu^(3+)粉体的发光强度更高.
Eu3＋ doped Lu2SiO5（Lu2SiO5 ∶Eu3＋）powders were prepared by urea-assisted coprecipitation method and sol-gel method,respectively.The effects of calcination temperature on the phase composition and micromorphology of the powders and the effect of Eu3＋doping amount on the luminescent property of the powders were compared and analyzed.The results show that the Lu2SiO5 powders with a relatively high purity were obtained by both methods.The powder obtained by sol-gel method was composed of pure and single Lu2SiO5 phase,while the powder obtained by urea-assisted coprecipitation method contained a small amount of impurity phase of Lu2O3.The particle size of the powder obtained by sol-gel method was 200-300 nm,and the surface of the powder particle was rougher than that by urea-assisted coprecipitation method.The luminescence intensity of the Lu2SiO5∶Eu3＋powders by the two methods was the largest when doped with 5 mol% Eu3＋,and that by sol-gel method was higher.
作者
杨磊
杨熠
陈诗怡
严明
YANG Lei;YANG Yi;CHEN Shiyi;YAN Ming(College of Materials and Chemical Engineering;Hubei Provincial Key Laboratory of Green Materials for Light Industry;Collaborative Innovation Center of Green Light-Weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2018年第4期40-43,47,共5页
Materials For Mechanical Engineering
基金
绿色轻工材料湖北省重点实验室开放基金资助项目(201710A15)
作者简介
杨磊（1991），男，湖北黄冈人，硕士研究生;导师：严明副教授
