Tb3+/Eu3+: YF3 nanophase embedded glass ceramics: Structural characterization, tunable luminescence and temperature sensing behavior
Tb3+/Eu3+: YF3 nanophase embedded glass ceramics: Structural characterization, tunable luminescence and temperature sensing behavior
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Tb3 /Eu3：YF3 纳米相嵌入玻璃陶瓷：结构表征、可调发光和温度传感行为
DOI：
10.1016/j.jallcom.2015.06.030
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发表时间：
2015-10-15
影响因子：
6.2
通讯作者：
Ji, Zhenguo
中科院分区：
文献类型：
--
作者：
Chen, Daqin;Wang, Zhongyi;Ji, Zhenguo
采用熔融淬火和后续加热的方法，成功合成了含正交β - yf3纳米晶的Tb3+/Eu3+共掺杂透明体玻璃陶瓷。通过扫描透射电子显微镜、发射光谱和衰变曲线的元素映射，证实了活性中心在YF3晶格中的分配。结果表明，Tb3+ -> Eu3+的能量转移在玻璃陶瓷中比在前驱体玻璃中更有效，通过简单地修改Eu3+含量就可以实现颜色可调发光，并诱导了Tb3+/Eu3+共掺杂玻璃陶瓷中Tb3+: D-5(4) -> F-7(5)跃迁和Eu3+: D-5(0) -> F-7(4)跃迁之间的线性温度依赖荧光强度比。预计所研究的玻璃陶瓷可能成为固态照明和光学温度传感器的有希望的候选者。(C) 2015 Elsevier B.V.版权所有
Tb3+/Eu3+ co-doped transparent bulk glass ceramics containing orthorhombic beta-YF3 nanocrystals were successfully synthesized by melt-quenching and subsequent heating. The partition of the active centers into the YF3 crystalline lattice was confirmed by elemental mapping in the scanning transmission electron microscope, emission spectra and decay curves. As a consequence, Tb3+ -> Eu3+ energy transfer was demonstrated to be more efficient in the glass ceramic than in the precursor glass, which resulted in color tunable luminescence by simply modifying Eu3+ content and induced the linearly temperature-dependent fluorescence intensity ratio between the Tb3+: D-5(4) -> F-7(5) transition and the Eu3+: D-5(0) -> F-7(4) one in the Tb3+/Eu3+ co-doped glass ceramic. It is expected that the investigated glass ceramic might be a promising candidate for solid-state lighting as well as optical temperature sensor. (C) 2015 Elsevier B.V. All rights reserved.