Co-precipitation synthesis, structural and morphological characterization, and luminescence properties of Dy3+ doped nanocrystal Gd2(WO4)3 and Gd2WO6 phosphors Original Research Article

Nanocrystal Gd2(WO4)3 and Gd2WO6 phosphors doped with Dy3+ were prepared via co-precipitation method under different reaction conditions. It was found that the nanocrystal Gd2(WO4)3 and Gd2WO6 phosphors exist in the monoclinic phase, and the phosphor particles showed sphere-like and uniform shape. The concentration quenching behavior and the dependence of fluorescence lifetime on the doping concentration were studied. It was found that the electric dipole–dipole interaction is the physical mechanism for the energy transfer between Dy3+ ions in both the nanocrystal Gd2(WO4)3 and Gd2WO6 phosphors.