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http://dx.doi.org/10.7742/jksr.2019.13.3.445

A Study on the Luminescence Properties of Eu3+ Ions Doped Vanadate  

Kang, Yeonhee (BK21+ Marine-Integrated Biomedical Technology Program, Pukyong National University)
Yoon, Changyong (Department of Nuclear Medicine, Dongnam Institute of Radiological & Medical Sciences Cancer center)
Publication Information
Journal of the Korean Society of Radiology / v.13, no.3, 2019 , pp. 445-451 More about this Journal
Abstract
The fluorescence intensity and fluorescence lifetime of $Ba_2GdV_3O_{11}$, a vanadate compound based on $Ba^{2+}$ ion, were investigated by adding $Eu^{3+}$ as a rare earth ion which is an alkaline earth metal, which is distributed around active ions and has a large influence on fluorescent properties when used as a host in a phosphor. $Ba_2GdV_3O_{11}:Eu^{3+}$ phosphor was synthesized by solid state method and the crystallinity of the phosphor was confirmed by X - ray diffraction analysis. The fluorescence properties of the $Ba_2GdV_3O_{11}:Eu^{3+}$ phosphor were measured using optical and laser. The energy transfer and diffusion of the $Ba_2GdV_3O_{11}:Eu^{3+}$ phosphor are highly dependent on the concentration of $Eu^{3+}$. When the concentration of $Eu^{3+}$ is low, it shows strong fluorescence to the CT band. However, as the concentration of $Eu^{3+}$ increases, the fluorescence due to 4f - 4f transition is strong. The concentration of $Eu^{3+}$ ion increased and the energy between ions was diffused, and the lifetime of fluorescence decreased. Energy transfer occurs between two $Eu^{3+}$ ions at low $Eu^{3+}$ concentration and energy diffusion occurs at high $Eu^{3+}$ concentration.
Keywords
Luminescence; Vanadate; Energy transfer;
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Times Cited By KSCI : 1  (Citation Analysis)
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