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新型荧光粉Ca₂MgSi₂O₇:Eu³⁺的制备及发光特性的研究

Preparation and Photoluminescence of a novel red-emitting Ca₂MgSi₂O₇:Eu³⁺ phosphor

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【Author】 Ying Lin, Shao-Kang Gao*, Gui-Mei Wang College of Chemistry and Chemical Engineering, Fuzhou University, 350002,Fuzhou

【机构】福州大学化学化工学院；

【Abstract】 A novel red-emitting Ca2MgSi2O7:Eu3+ was synthesized by the sol-gel method. It can be effectively excited by ultraviolet (393nm), and exhibits a satisfactory red performance. The effects of synthetic conditions, such as pH, the concentration of Eu3+, the fluxes, on the luminescence properties were studied. X-ray diffraction and photoluminescence spectra were employed to characterize its spectra property. The results show that Eu3+ ions occupy Ca2+ asymmetry cationic sites preferentially, thus emitting red light at 613 nm corresponding to the transition from 5D0 to7F2 levels.更多还原

【关键词】红色荧光粉；白光LED；光谱性质；

【基金】福建省教育厅资助科研项目(JB05017);国家自然科学基金资助项目(No.30470444)。