A novel double perovskite tellurate Eu3+-doped Sr2MgTeO6 red-emitting phosphor with high thermal stability

文献类型： 外文期刊

第一作者： Liang, Jingyun

作者： Liang, Jingyun;Zhao, Shancang;Yuan, Xuexia;Li, Zengmei

作者机构：

关键词： Luminescence;Tellurate;Sr2MgTeO6:Eu3+;Phosphor

期刊名称：OPTICS AND LASER TECHNOLOGY （ 影响因子：3.867； 五年影响因子：3.566 ）

ISSN： 0030-3992

年卷期： 2018 年 101 卷

页码：

收录情况： SCI

摘要： A series of novel double perovskite tellurate red-emitting phosphors Sr2MgTeO6:xEu(3+) (x=0.050.40) were successfully synthesized by a high-temperature solid-state reaction method. The phase structure, photoluminescence properties and thermal stability of the phosphor were investigated in detail. The phosphor shows dominant emission peak at 614 nm belonging to the D-5(0)-> F-7(2) electric dipole transition under 465 nm excitation. The luminescence intensity keeps increasing with increasing the content of Eu3+ to 25 mol%, and the critical transfer distance of Eu3+ was calculated to be 12 angstrom. The quenching temperature for Sr2MgTeO6:0.25Eu(3+) was estimated to be above 500 K. This spectral feature reveals high color purity and excellent chromaticity coordinate characteristics. Therefore, Eu3+-doped Sr2MgTeO6 phosphors are potential red phosphors for blue chip-based white light-emitting diode and display devices.(C) 2017 Elsevier Ltd. All rights reserved.

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