Preparation of porous Sr₂MgSi₂O₇:Eu²⁺,Dy³⁺ energy storage carriers via sol-hydrothermal synthesis

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• 作者：Xiaoli Wei^a ; Yi Shen^a ; ; Guifu Zuo^a ; Luyao Hou^a ; YanZhi Meng^a ; Fengfeng Li^b
• 关键词：Sr2MgSi2O7 ; Eu2+ ; Dy3+ ; Sol&ndash ; gel process ; Porosity ; Glass&ndash ; ceramics ; Optical properties
• 刊名：Ceramics International
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：41
• 期：10
• 页码：13872-13877
• 全文大小：2054 K

文摘

Porous Sr₂MgSi₂O₇:Eu²⁺,Dy³⁺ energy storage carriers were successfully prepared via the sol-hydrothermal method. A thermogravimetric and differential thermal analysis was performed to investigate the influence of the sintering time and sintering temperature on the crystallization process of the porous Sr₂MgSi₂O₇:Eu²⁺,Dy³⁺. The phase composition and microstructure of the porous Sr₂MgSi₂O₇:Eu²⁺,Dy³⁺ samples were analyzed by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Furthermore, the luminescence behavior was analyzed using a 3D photoluminescence scanner, excitation and emission spectra. The optical storage capability of the samples was investigated by studying the photoluminescence decay curves, which revealed that the afterglow time of the product could be improved by optimizing the annealing time and temperature.