中文摘要：

采用络合溶胶-凝胶法制备出系列纳米级发光材料ASnO3（A=Ca,Sr,Ba）∶1%Eu。并采用X射线衍射（XRD）、紫外光谱（UV-Vis）、透射电镜（TEM）、荧光光谱（PL）对所制备的纳米发光粉体进行表征。结果表明：所合成的物质均为具有确定结构的单一物相,并从结构上分析了其发光性质随碱土金属离子半径变化而变化的规律。

英文摘要：

The present paper reports the photoluminescence properties of nanocrytalline ASnO3（A=Ca,Sr and Ba）∶1%Eu phosphor synthesized by the Pechini-type sol-gel method.The powder was characterized by X-ray diffraction（XRD）,UV-Vis absorption spectra,transmission electron microscopy（TEM） and photoluminescence measurements.The experimental results show that BaSnO3 has the ideal cubic peroskite structure,while SrSnO3 and CaSnO3 are both distorted from cubic symmetry by an octahedral tilting distortion.The difference of structure in induced the different spectral properties of ASnO3：∶1%Eu.On the other hand,when A^2＋ changes from Ca^2＋ to Ba^2＋,the luminescence intensity becomes weak.So CaSnO3∶1%Eu seems to be a good candidate for new phosphors.