NDLI: Hydrothermal synthesis, multicolor tunable luminescence and energy transfer of Eu$^{3+}$ or/and Tb$^{3+}$ activated NaY(WO$_{4}$)$

Content Provider	Springer Nature Link
Author	Liu, Yan Liu, Guixia Wang, Jinxian Dong, Xiangting Yu, Wensheng Wang, Tingting
Copyright Year	2016
Abstract	Eu$^{3+}$ and/or Tb$^{3+}$ doped NaY(WO$_{4}$)$_{2}$ nanomaterials have been successfully synthesized by one-step hydrothermal method. The samples were characterized by X-ray diffraction, field-emission scanning electron microscopy, X-ray energy dispersive spectroscopy, and photoluminescence spectra. The results show that the novel nanoplates with a diameter of 300–600 nm and the thickness of 20–25 nm are observed. Under the excitation of 246 or 230 nm, individual RE$^{3+}$ ions activated NaY(WO$_{4}$)$_{2}$ phosphors exhibit excellent emission properties in their respective regions. The as-prepared Eu$^{3+}$ or Tb$^{3+}$ doped samples show strong red and green emission, originating from the allowed $^{5}$D$_{0}$ → $^{7}$F$_{J}$ (J = 0, 1, 2) transition of the Eu$^{3+}$ ions and the $^{5}$D$_{4}$ → $^{7}$F$_{J}$ (J = 6, 5, 4, 3) transition of the Tb$^{3+}$ ions. In addition, by properly tuning the relative concentration of Eu$^{3+}$ ions in the case of Eu$^{3+}$ and Tb$^{3+}$ co-doped systems, tunable emissions in a single component are obtained under the excitation of 230 or 395 nm. Moreover, an energy transfer from Tb$^{3+}$ to Eu$^{3+}$ is observed, which has been justified through the luminescence spectra and the fluorescence decay curves. Furthermore, the corresponding luminescence and energy transfer mechanism have been proposed in optical transitions and possible energy transfer scheme. These results indicate that Eu$^{3+}$ and Tb$^{3+}$ doped NaY(WO$_{4}$)$_{2}$ phosphors will find potential application in the field of solid-state lighting.
Starting Page	10780
Ending Page	10790
Page Count	11
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	27
Issue Number	10
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2016-06-20
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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