材料科学
兴奋剂
光致发光
发光
分析化学(期刊)
陶瓷
发射光谱
光电子学
光谱学
猝灭(荧光)
玻璃陶瓷
透射电子显微镜
发射强度
纳米晶
荧光
光学
谱线
复合材料
纳米技术
化学
物理
天文
量子力学
色谱法
作者
Leqi Yao,Guohua Chen,Tao Yang,Sanchuan Cui,Zhenchun Li,Yun Yang
标识
DOI:10.1016/j.ceramint.2016.05.092
摘要
Tb3+/Eu3+ co-doped glass ceramics containing NaCaPO4 nanocrystals were successfully synthesized via traditional melt-quenching route with further heat-treatment and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and photoluminescence spectroscopy. The energy transfer process of Tb3+→Eu3+ was confirmed by excitation and emission spectra and luminescence decay curves, and the energy transfer efficiency was also estimated. The results indicated that the efficient emission of Eu3+ was sensitized by Tb3+ under the excitation of 378 nm, realizing tunable emission in the transparent bulk glass ceramics containing NaCaPO4 nanocrystals. Furthermore, optical thermometry was achieved by the fluorescence intensity ratio between Tb3+:5D4→7F5 (~542 nm) and Eu3+:5D0→7F2 (~612 nm). The maximum absolute sensitivity of 4.55% K−1 at 293 K and the maximal relative sensitivity of 0.66% K−1 at T=573 K for Tb3+/Eu3+ co-doped transparent NaCaPO4 glass ceramic are obtained. It is expected that the investigated transparent NaCaPO4 glass ceramics doped with Tb3+/Eu3+ have prospective applications in display technology and optical thermometry.
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