【摘要】 本文报道了MSnO₃∶Eu³⁺和M₂SnO₄∶Eu³⁺（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CaSnO₃∶Eu³⁺和Ca₂SnO₄∶Eu³⁺为正交晶系,SrSnO₃∶Eu³⁺和BaSnO₂∶Eu³⁺为立方晶系,而Sr₂SnO₄∶Eu³⁺和Ba₂SnO₄∶Eu³⁺为四方晶系。激发光谱表明,随Ba—Sr—Ca离子半径减小,Eu³⁺的电荷迁移能量紫移,而Eu³⁺的f-f跃迁红移。发射光谱表明,CaSnO₃∶Eu³⁺和Ca₂SnO₄∶Eu³⁺以电偶极跃迁为主,而其它4种化合物不存在电偶极跃迁。更多还原

【Abstract】 The synthesis and fluorescent property of MSnO3 : Eu3+ and M2SnO4 : Eu3+(M = Ca,Sr, Ba) have been reported. The phosphors were prepared by mixing the solution of MCl2(M = Ca,Sr, Ba) SnCl2 and EuCl3 according to stoichiometry. Their oxalates were coprecipitated and sintered at 1400-1500℃ for 5-6 h. Structures of the phosphors were confirmed by X-ray diffraction analysis, and CaSnO3: Eu3+ and Ca2SnO4: Eu3+ belong to othorhomic system, SrSnO3: Eu3+ and BaSnO3 : Eu3+ the cubic, Sr2SnO4: Eu3+ and Ba2SnO4: Eu3+ the tetragonal. The excited and emission spectra of the phosphors show that, the energy of charge transfer transition for Eu3+ shifts to the blue, and energy of f-f transition for Eu3+ shifts to the red. The CaSnO3: Eu3+ and Ca2SnO4: Eu3+ show the major electric dipole transition. The other four phosphors show the major magnetic dipole transition.更多还原