Dy³⁺-activated M₂SiO₄ (M = Ba, Mg, Sr)-type phosphors

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• 作者：ESRA ÖZTÜRK ; ERKUL KARACAOGLU
• 关键词：Alkaline orthosilicate ; solid ; state reaction method ; open atmosphere ; luminescence ; rare ; earth ions
• 刊名：Bulletin of Materials Science
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：40
• 期：1
• 页码：25-30
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general; Engineering, general;
• 出版者：Indian Academy of Sciences
• ISSN：0973-7669
• 卷排序：40

文摘

The alkaline orthosilicates of M₂SiO₄ (M = Ba, Mg, Sr) activated with Dy3+ and co-doped with Ho3+ are prepared through conventional solid-state method, i.e., mixing and grinding of solid form precursors followed by high-temperature heat treatments of several hours in furnaces, generally under open atmosphere and investigated by X-ray diffraction (XRD) to get phase properties and photoluminescence (PL) analysis to get luminescence properties. The thermal behaviours of well-mixed samples were determined by differential thermal analysis (DTA)/thermogravimetry (TG). The PL spectra show that the 478 and 572 nm maximum emission bands are attributed, respectively, to 4F_9/2 → 6H_15/2 and 4F_9/2 → 6H_13/2 transitions of Dy3+ ions.