Studies on the Synthesis and Fluorescent Property of Alkaline Earth Stannates Doped Europium

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (6): 760.

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Studies on the Synthesis and Fluorescent Property of Alkaline Earth Stannates Doped Europium

LI Yuan-Ying, CHEN Huo-Yang, YANG Yan-Sheng

Deparment of Chemistry, Zhoagshan University, Guangzhou, 510275

Received:1992-06-17 Revised:1992-12-15 Online:1993-06-24 Published:1993-06-24

Abstract

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.

Key words: Europium, Alkaline earth stannates, Synthesis, Fluorescent property

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LI Yuan-Ying, CHEN Huo-Yang, YANG Yan-Sheng. Studies on the Synthesis and Fluorescent Property of Alkaline Earth Stannates Doped Europium[J]. Chem. J. Chinese Universities, 1993, 14(6): 760.

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Studies on the Synthesis and Fluorescent Property of Alkaline Earth Stannates Doped Europium

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