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"GdVO4:Eu"

Photoluminescence Properties of Red Phosphors Gd(1-x)VO4Eu(x)3+ Subjected to Eu3+ Concentration
Shin Ho Cho, Seon Woog Cho
J Electr Electron Mater 2012;25(3):193-197.   Published online March 1, 2012
Gd(1-x)VO4:Eu(x)3+ red phosphors were synthesized with changing the concentration of Eu3+ ion by using a solid-state reaction method. The crystal structure, surface morphology, and photoluminescence and photoluminescence excitation properties of the red phosphors were measured by using X-ray diffractometer, field emission-scanning electron microscopy, and florescence spectrometer, respectively. The XRD results showed that the main peak of all the phosphor powders occurs at (200) plane. As for the photoluminescence properties, the maximum excitation spectrum occurred at 306 nm due to the charge transfer band from VO4(3-) to Eu3+ ions and the maximum emission spectrum was the red luminescence peaking at 619 nm when the concentration of Eu3+ ion was 0.10 mol.
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