Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10623982 | Ceramics International | 2016 | 6 Pages |
Abstract
Dy3+/Tb3+ codoped CaMoO4 phosphors were synthesized by a simple sol-gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectroscopy. The energy transfer process of Dy3+âTb3+ was confirmed by excitation and emission spectra and luminescence decay curves, and the energy transfer efficiency was also estimated. The results verified that the efficient emission of Tb3+ was sensitized by Dy3+ under the excitation of 354Â nm, realizing tunable emission in CaMoO4 phosphors. Furthermore, optical thermometry was achieved by the fluorescence intensity ratio between Tb3+: 5D4â7F5 (~546Â nm) and Dy3+: 4F9/2â6H13/2 (~575Â nm). It is expected that the investigated CaMoO4 nanograins doped with Dy3+/Tb3+ have prospective applications in display technology and optical thermometry.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Xinyue Li, Mingbin Dong, Fangfang Hu, Yanguang Qin, Lu Zhao, Xiaotao Wei, Yonghu Chen, Changkui Duan, Min Yin,