Articles
  • Synthesis and luminescence properties of Na3Gd(PO4)2 : Dy3+ phosphors 
  • Jae Jeong Shima, Misun Joa,b, B.C. Jamalaiaha, Jiang Zehana, Sun Il Kima,*, Wan Young Chungb and Hyo Jin Seoa,*
  • a Department of Physics and Interdisciplinary Program of Biomedical, Mechanical & Electrical Engineering, Pukyong National University, Busan 608-737, Korea b Department of Electronic Engineering, Pukyong National University, Busan 608-737, Korea
Abstract
Dy3+-doped N3Gd(PO4)(2) phosphors were synthesized by high temperature solid-state reaction. The X-ray diffraction patterns and Fourier transform infrared absorption measurements were performed to characterize the synthesized phosphors. The excitation and emission spectra of Gd3+ and Dy3+ in Na3Gd(PO4)(2) : Dy3+ were detected in the wavelength region from UV to visible. With increasing Dy3+ concentration, the Gd3+ emission at 313 nm due to the P-6(7/2) -> S-8(7/2) transition decreases, while blue and green emissions due to the Dy3+ -> F-4(9/2) H-4(15/2), (13/2) transitions increase under excitation into the Gd3+ I-6(7/2) Level. The results indicate that the efficient energy transfer occurs from Gd3+ to Dy3+ in N3Gd(PO4)(2) : Dy3+.

Keywords: luminescence; Gd3+ ions; Dy3+ ions; Energy transfer; Phosphates; N3Gd(PO4)(2)

This Article

  • 2014; 15(3): 149-152

    Published on Jun 30, 2014