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Photoluminescence Properties of Red Phosphors Gd1-xVO4:Eux3+ Subjected to Eu3+ Concentration

Eu3+ 농도에 따른 적색 형광체 Gd1-xVO4:Eux3+의 형광 특성

  • Cho, Shin-Ho (Department of Materials Science and Engineering, Silla University) ;
  • Cho, Seon-Woog (Department of Materials Science and Engineering, Silla University)
  • Received : 2012.01.27
  • Accepted : 2012.02.17
  • Published : 2012.03.01

Abstract

$Gd_{1-x}VO_4:{Eu_x}^{3+}$ red phosphors were synthesized with changing the concentration of $Eu^{3+}$ ion by using a solid-state reaction method. The crystal 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 ${VO_4}^{3-}$ to $Eu^{3+}$ ions and the maximum emission spectrum was the red luminescence peaking at 619 nm when the concentration of $Eu^{3+}$ ion was 0.10 mol.

Keywords

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