Luminescence, energy transfer and thermal stability of Eu2+ and Tb3+ in the BaCa2MgSi2O8 host
Luminescence, energy transfer and thermal stability of Eu2+ and Tb3+ in the BaCa2MgSi2O8 host
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BaCa2MgSi2O8 基质中 Eu2 和 Tb3 的发光、能量传递和热稳定性
DOI：
10.1016/j.materresbull.2017.01.021
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发表时间：
2017-05-01
影响因子：
5.4
通讯作者：
Liang, Hongbin
中科院分区：
文献类型：
--
作者：
Hou, Dejian;Pan, Xixiang;Liang, Hongbin
采用固相反应法制备了Eu 2+和Tb 3+掺杂的BaCa 2 MgSi 2 O 8荧光粉。研究了荧光粉的结构和形貌。测量并讨论了从紫外到可见光区的激发和发射光谱以及衰减曲线。在300-500 K温度范围内研究了样品的温度猝灭特性，发现共掺杂样品中Eu ~（2+）的猝灭比Tb ~（3+）的猝灭更容易。研究了Eu ~（2+）与Tb ~（3+）之间的能量传递，能量传递效率随Tb ~（3+）浓度的增加而增加，最高可达30%。能量传递的研究有利于开发高效发光材料。(C)2017爱思唯尔有限公司版权所有
Eu2+ and Tb3+ doped BaCa2MgSi2O8 phosphors were prepared by a solid state reaction technique. The structure and morphology of the phosphors were investigated. The excitation and emission spectra from the ultraviolet to the visible region as well as decay curves have been measured and discussed. The temperature quenching properties were studied in the temperature range of 300-500 K, which showed that the quenching of Eu2' emission was easier than that of Tb3" in codoped samples. Energy transfer from Eu2+ to Tb3+ was verified, the energy transfer efficiencies increase with Tb3+ concentration, and the highest efficiency can approach 30%. The investigation on energy transfer is beneficial to develop high efficiency luminescence materials. (C) 2017 Elsevier Ltd. All rights reserved.