CaGd3F11:Eu3+超小纳米晶的制备及其发光性质研究

Synthesis and luminescence of Ultrasmall CaGd3F11:Eu3+ nanocrystals

摘要:

以无水氯化钙、稀土硝酸盐、正辛醇为原料，以正辛胺和油酸为表面活性剂，通过控制不同的反应条件，采用溶剂热法制备出形貌均匀的CaGd3F11:Eu3+纳米发光材料。用X射线衍射(XRD)、透射电子显微镜(TEM)和荧光分光光度计对合成的纳米晶的粒径、形貌和光学性质进行了表征。结果表明CaGd3F11纳米晶的结晶度良好且尺寸均匀（约5 nm），其作为基质材料，掺杂Eu3+表现出很强的荧光发射。

Abstract:

CaGd3F11:Eu3+ nanocrystals with the morphologies of nanoparticles were prepared by octylamine and oleic acid as capping ligands, and anhydrous calcium chloride, rare earth nitrate, n-octanol as the raw materials with solvothermal method. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and fluorescence spectrophotometer. The results indicate that CaGd3F11 nanocrystals are well-crystallized and their sizes are uniform (about 5 nm). As a luminescence host, it shows higher emitting intensity with Eu3+ doping.