Structure and Luminescence of Red Phosphor GdAl_3(BO_3)_4:Eu~(3+)

Synthesis of GdAl3(BO3)4:Eu3+ red phosphors in powder crystal form were conducted by the Sol-Gel process at lower temperature 960 ℃ compared with conventional solid state reaction.The powder XRD diffraction pattern of GdAl3(BO3)4:Eu3+ was indexed by hexagonal system with the lattice parameters a=9.299 2 nm,c=7.257 7 nm using Jade5 program.Monitored at the emission of 613 nm,its photoluminescence absorption are:270,391,400,472,542,728,766 and 791 nm at room temperature.Excited at 270 nm,the maximum emission peak is 613 nm.