Synthesis and luminescent characterization of YAl_3(BO_3)_4:Tb~(3+) phosphors

摘要

YAl_3(BO_3)_4:Tb~(3+) phosphors were fabricated by the sol-gel method. The phosphor showed prominent luminescence in green due to the magnetic dipole transition of ~5D_(4-)~7F_5. Structural characterization of the luminescent material was carried out with X-ray powder diffraction (XRD) analysis. Luminescence properties were analyzed by measuring the excitation and photoluminescence spectra. Photoluminescence measurements indicated that the phosphor exhibited bright green emission at about 541 nm under UV excitation. It is shown that the 11% of doping concentration of Tb~(3+) ions in YAl_3(BO_3)_4:Tb~(3+) phosphors is optimum.