【摘要】 采用络合溶胶-凝胶法制备出系列纳米级发光材料A2SnO4(A=Ca,Sr,Ba):Eu。并采用相关光谱、X射线衍射(XRD)、荧光光谱(PL)对所制备的纳米发光粉体进行表征。结果表明:制备的纳米发光粉体的粒径均匀,集中在100 nm左右;XRD结果证明碱土金属锡酸盐结构均为具有确定结构的单一物相;并且这些发光粉体的性质与碱土金属离子的半径密切相关。更多还原

【Abstract】 Nanosized A₂SnO₄（A=Ca,Sr,Ba）:1%Eu with diameters ranging from 50 to 100 nm were synthesized by complex sol-gel methods.The structures and spectral properties of A₂SnO₄（A=Ca,Sr,Ba）:Eu were studied by using X-ray powder diffraction（XRD） and luminescence spectra.The experimental results show that Ca₂SnO₄:1%Eu exhibits bright red emission at（about） 615 nm under UV excitation,which makes it a possible good candidate for FED application.However Sr₂SnO₄:1%Eu and Ba₂SnO₄:1%Eu exhibit orange emission at about 590 nm because in these hosts Eu³⁺ ions occupy the symmetric sites.更多还原