Journal of Guangdong University of Technology ›› 2017, Vol. 34 ›› Issue (05): 91-95.doi: 10.12052/gdutxb.160171

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Synthesis and Photoluminescence Properties of Multicolor Tunable GdNbO4: Tb3+ Phosphors

Zhang Lu, Yi Shuang-ping, Zhao Wei-ren, Hu Xiao-xue   

  1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 51006, China
  • Received:2016-12-15 Online:2017-09-09 Published:2017-07-10

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Abstract: A color-tunable phosphor based on Tb3+ doped GdNbO4 were synthesized by a traditional solid-state reaction method. X-ray powder diffraction (XRD), diffused reflectance spectra, photoluminescence spectra and decay curves were utilized to characterize the as-prepared phosphors. The GdNbO4 host was proved to be a self-activated phosphor with broad absorption range from 200 to 325 nm. When Tb3+ ions were doped into the host lattice, the energy transfer from host to Tb3+ was identified. And the broad absorption in the UV region was changed and enhanced. Furthermore, the electric dipole-dipole interaction is the major mechanism for the concentration quenching.

Key words: GdNbO4, photoluminescence, energy transfer

CLC Number: 

  • TB321
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