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http://dx.doi.org/10.4313/JKEM.2011.24.8.659

Photoluminescence Properties of Green Phosphor Y1-xBO3:Tbx3+ Synthesized by Solid-state Reaction Method  

Cho, Shin-Ho (Department of Electronic Materials Engineering, Silla University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.24, no.8, 2011 , pp. 659-663 More about this Journal
Abstract
[ $Y_{1-x}BO_3:Tb_x^{3+}$ ]ceramic phosphors were synthesized with changing the concentration of $Tb^{3+}$ at a sintering temperature of $1,100^{\circ}C$ and a reduction temperature of $950^{\circ}C$ by using a solid-state reaction method. The crystal structure, surface morphology, and photoluminescence properties of the phosphors were investigated as a function of $Tb^{3+}$ ion concentration by using XRD (x-ray diffractometer), scanning electron microscopy, and photoluminescence spectrophotometry, respectively. The XRD results showed that the main peak of the phosphor powders occurs at (101) plane. As for the photoluminescence properties, the excitation spectra showed the broad band centered at 306 nm and the emission intensity of the spectra peaked at 543 nm indicated a significant decrease as the concentration of $Tb^{3+}$ ion is increased.
Keywords
Green phosphor; $YBO_3$:Tb; Luminescence;
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