NDLI: Energy transfer and luminescence properties of Dy$^{3+}$ ions doped in La$_{2}$W$_{3}$O$

Content Provider	Springer Nature Link
Author	Cai, Peiqing Park, Cheol Woo Chen, Cuili Han, Cheng Dang, Thi Hang Seo, Hyo Jin Vu, Thi Quynh Lin, Qin Kim, Sun Il Wang, Jing
Copyright Year	2016
Abstract	La$_{2}$W$_{3}$O$_{12}$:Dy$^{3+}$ phosphors were synthesized by using a high-temperature solid-state reaction. The Dy$^{3+}$ concentration in the La$_{2}$W$_{3}$O$_{12}$ lattice was varied from 0.01 to 100 %. The crystalline phases of the samples were confirmed by using an X-ray diffraction analyses. Emission and excitation spectra and decay curves of Dy$^{3+}$ ions in the La$_{2}$W$_{3}$O$_{12}$ lattices were measured at room temperature. The two charge-transfer (CT) bands that overlapped in the wavelength region 210 - 320 nm were identified as being due to the CT transitions of O$^{2−}$-Dy$^{3+}$ and WO 4 2− . The decay times of the $^{4}$F$_{9/2}$ emission were shortened with increasing Dy$^{3+}$ concentration, and the decay curves were slightly nonexponential even at low Dy$^{3+}$ concentration. The decay curves were well fitted by the Inokuti-Harayama model based on the energy-transfer process between two Dy$^{3+}$ ions at concentrations lower than 10 mol%. On the other hand, the energy diffusion among Dy$^{3+}$ ions dominate the energy-transfer process at higher Dy$^{3+}$ concentrations up to 100 mol%.
Starting Page	1575
Ending Page	1580
Page Count	6
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	69
Issue Number	10
e-ISSN	19768524
Language	English
Publisher	The Korean Physical Society
Publisher Date	2016-11-25
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rare-earth ion Theoretical, Mathematical and Computational Physics Luminescence Decay Dy$^{3+}$ ion Energy transfer Phosphor Physics Particle and Nuclear Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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