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本文报道了MSnO_3∶Eu~(3+)和M_2SnO_4∶Eu~(3+)(M=Ca,Sr,Ba)体系荧光粉的合成和荧光性质。产品经X射线确证CaSnO_3∶Eu~(3+)和Ca_2SnO_4∶Eu~(3+)为正交晶系,SrSnO_3∶Eu~(3+)和BaSnO_2∶Eu~(3+)为立方晶系,而Sr_2SnO_4∶Eu~(3+)和Ba_2SnO_4∶Eu~(3+)为四方晶系。激发光谱表明,随Ba—Sr—Ca离子半径减小,Eu~(3+)的电荷迁移能量紫移,而Eu~(3+)的f-f跃迁红移。发射光谱表明,CaSnO_3∶Eu~(3+)和Ca_2SnO_4∶Eu~(3+)以电偶极跃迁为主,而其它4种化合物不存在电偶极跃迁。
In this paper, the synthesis and fluorescence properties of phosphors of MSnO_3: Eu ~ (3+) and M_2SnO_4: Eu ~ (3 +) (M = Ca, Sr, Ba) The products were confirmed to be orthorhombic by X-ray diffraction. SrSnO 3: Eu 3+ and BaSnO 2:Eu 3+ were cubic system, and CaSnO 3: Eu 3+ and Ca 2 SnO 4: Eu 3+ were orthorhombic. While Sr_2SnO_4:Eu ~ (3+) and Ba_2SnO_4:Eu ~ (3+) are tetragonal. The excitation spectra show that as the Ba-Sr-Ca ion radius decreases, the charge transfer energy of Eu ~ (3+) shifts to a violet and the f-f transition of Eu ~ (3+) shifts red. The emission spectra show that the electric dipole transitions are mainly CaSnO_3: Eu ~ (3+) and Ca_2SnO_4: Eu ~ (3+), while the other four do not show the dipole transitions.