P-102: Enhanced VUV Photoluminescence Properties of (Y_(0.5)Gd_(0.5))_(0.94-x)Al_x(V_(0.25)P_(0.75))O_4:Eu_(0.06) Phosphors by Doping Al~3

摘要

High-quality (Y_(0.5)Gd_(0.5))_(0.94-x)Al_x(V_(0.25)P_(0.75))O_4:Eu_(0.06) (0≤x≤0.02) phosphors were synthesized by solution combustion method. We investigated their microstructure and photoluminescence properties as a function of Al~(3+) content. The emission spectra consisted of three strong and sharp peaks at 594, 615 - 620, and 697 - 704 nm. These peaks were assigned to the transitions from the excited ~5D_0 to ~7F_j (j = 1, 2, and 4) of Eu~(3+) activator. The annealed phosphors formed a single phase with the tetragonal structure. The doped Al~(3+) significantly improved the photoluminescence properties.