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http://dx.doi.org/10.5757/JKVS.2011.20.6.430

Effects of Eu3+ Concentration on the Photoluminescence Properties of Y1-xPO4:Eux3+ Red Phosphor  

Cho, Seon-Woog (Department of Materials Science and Engineering, Silla University)
Cho, Shin-Ho (Department of Materials Science and Engineering, Silla University)
Publication Information
Journal of the Korean Vacuum Society / v.20, no.6, 2011 , pp. 430-435 More about this Journal
Abstract
$Y_{1-x}PO_4:{Eu_x}^{3+}$ red phosphors were synthesized with changing the concentration of $Eu^{3+}$ ion by using a solid-state reaction method. The crystal structures of all the red phosphors were found to be a tetragonal system composed of (200) diffraction peak centered at $25.88^{\circ}$, and the morphology of grains approached the spherical form with homeogenous size distribution as the concentration of $Eu^{3+}$ ion increased. As for the photoluminescence properties, all of the ceramic phosphors, irrespective of $Eu^{3+}$ ion concentration, showed the red-orange and the red emission peaked at 593.0 and 619.2 nm respectively. As the concentration of $Eu^{3+}$ ion increased, the excitation spectrum moved into a longer wavelength with the increase of emission intensity. The maximum excitation and the emission spectrum were observed at 0.15 mol of $Eu^{3+}$ ion.
Keywords
Red phosphor; $YPO_4$:Eu; Solid-state reaction;
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