Li+、Na+共掺(YxGdyLu1-x-y)2O3∶0.5%Pr3+荧光粉的制备及发光特性研究  

Preparation and luminescence properties of Li+,Na+ co-doped(YxGdyLu1-x-y)2O3∶0.5%Pr3+phosphors

作　　者：庹娟 叶颖 赵海琴 王林香[1,2,3] TUO Juan;YE Ying;ZHAO Hai-qin;WANG Lin-xiang(Department of Physics,Xinjiang Normal University,Urumqi 830054,China;Key Laboratory of Novel Luminescent Materials and Nanostructures,Xinjiang Normal University,Urumqi 830054,China;Key Discipline of Physics,Xinjiang Normal University,Urumqi 830054,China)

机构地区：[1]新疆师范大学物理与电子工程学院,新疆乌鲁木齐830054 [2]新疆师范大学新疆矿物发光材料及其微结构实验室,新疆乌鲁木齐830054 [3]新疆师范大学物理学重点学科,新疆乌鲁木齐830054

出　　处：《中国光学》2019年第6期1279-1287,共9页Chinese Optics

基　　金：新疆维吾尔自治区自然科学基金(No.2017D01A60)~~

摘　　要：用高温固相法制备了Li+,Na+共掺(YxGdyLu1-x-y)2O3:0.5%Pr3+荧光粉末。用XRD对样品进行结构表征,用扫描电镜观测了样品的形貌,测量了样品的激发光谱、发射光谱及发光衰减曲线。结果显示,Li+、Na+和Pr3+的掺杂没有引起(YxGdyLu1-x-y)2O3立方晶相结构的改变。在单一基质中掺杂的Li+、Na+可有效改善晶粒尺寸,在复合基质中掺杂的Li+、Na+,不仅可以有效改善晶粒尺寸,还使得样品有陶瓷化的趋势。在272 nm激发下,粉末样品在632 nm处均呈现较强的Pr3+红色发射。不同条件下,1000℃煅烧2 h获得的(Y0.05Gd0.05Lu0.9)2O3:0.5%Pr3+,2.5%Li+,1%Na+荧光粉末的发光最强,且荧光寿命较短。Li+,Na+co-doped(YxGdyLu1-x-y)2O3:0.5%Pr3+phosphors were synthesized with a high temperature solid-state reaction.The structures of the samples were characterized by XRD.The excitation spectra,emission spectra and fluorescence lifetime of the samples were measured and analyzed using a fluorescence spectrophotometer.The results show that they are still the cubic phase of the matrix for Li+,Na+,doped(YxGdyLu1-x-y)2O3:Pr3+samples.The doping of Li+and Na+in a single matrix can effectively improve the grain size while the doping of Li+and Na+in a composite matrix not only effectively improves the grain size,but also causes the sample to become ceramic.Under excitation at 272 nm,the powder samples present strong red emissions of Pr3+at 632 nm.Under different conditions,(Y0.05Gd0.05Lu0.9)2O3:0.5%Pr3+,2.5%Li+,1%Na+fluorescent powder obtained by calcination at 1000℃for two hours has the strongest luminescence,while the lifetime of the sample is shorter.

关 键 词：荧光粉末 Li+ Na+共掺(YxGdyLu1-x-y)2O3∶0.5%Pr3+ 发光强度 荧光寿命 

分 类 号：O482.31[理学—固体物理]