NDLI: Synthesis and luminescence properties of ZnAl$_{2}$O$

Content Provider	Springer Nature Link
Author	Lee, Seung Jin Cho, Shinho
Copyright Year	2014
Abstract	ZnAl$_{2}$O$_{4}$:RE$^{3+}$ (RE = Eu or Sm) phosphor powders were synthesized with different concentrations of activator ions by using the conventional solid-state reaction method. The effects of the concentration of activator ions on the structural, morphological, and luminescent properties of zinc aluminate phosphors were investigated. The X-ray diffraction patterns revealed that the phosphors synthesized with different concentrations of activator ions showed mixed phases of ZnAl$_{2}$O$_{4}$, ZnO, and Al$_{2}$O$_{3}$. The crystallite size was estimated using the Scherrer formula, and the maximum size was obtained for 0.20 mol of Eu$^{3+}$ions. The emission spectra of of Eu$^{3+}$-doped ZnAl$_{2}$O$_{4}$ phosphors under excitation at 303 nm exhibited one intense green band at approximately 520 nm and three weak bands centered at 590, 621, and 701 nm, respectively. The intensity of all the emission bands reached a maximum for 0.05 mol of Eu$^{3+}$ ions. For the Sm$^{3+}$-doped ZnAl$_{2}$O$_{4}$ phosphors, a broad emission band peak at 526 nm and several weak lines in the range 470–700 nm were observed. The results suggest that the luminescent intensity of the phosphors can be enhanced by controlling the amount of activator ions incorporated into the host lattice.
Starting Page	135
Ending Page	139
Page Count	5
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	64
Issue Number	1
e-ISSN	19768524
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-01-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ZnAl$_{2}$O$_{4}$ Activator Theoretical, Mathematical and Computational Physics Emission Solid-state reaction Physics Particle and Nuclear Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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