摘要
通过调节Na／RE比例，并在高沸点有机溶剂中采用热分解法合成了一系列NaGdF4：Ybn2Er0.02纳米颗粒。利用X射线粉末衍射仪（XRD）、透射电子显微镜（TEM）和日立F-4600荧光分光光度计分别对样品的物相、形貌、颗粒尺寸及发光性能进行了表征。结果表明：样品的结晶度、物相及发光性能均依赖于Na／RE比例。Na／RE比例为1的TEM图片显示，合成的NaGdF4：Yb0.2Er0．02纳米颗粒的形貌较为均一，颗粒平均直径约为20nm与德拜一谢乐公式计算结果相一致。
A series of NaGdF4：Yb0.2Er0.02 nanoparticles were prepared by thermal decomposition method of tuning the ratio of Na/RE in oleic acid and 1-octadecene solution. The samples were characterized by using X-ray power diffraction （XRD）, transmission electron microscopy （TEM） and Hitachi F-4600 fluorescence spectrophotometer. The results showed that the crystalline, phases and luminescent properties of the samples were dependent on the Na/RE ratio. TEM images of Na/RE=I showed that synthetic NaGdF4：Yb0.2Er0.02 sample with more uniform morphology, and the average particle diameter of about 20 nm was consistent with the results of Debye-Scherrer formula.
基金
国家自然科学基金资助项目（2126016）
内蒙自然科学基金资助项目（2012MS0209,2013MS0218）
内蒙古师范大学研究生科研创新资助基金（CXJJS15082）
