Effect of calcinations temperature on the luminescence intensity and fluorescent lifetime of Tb3+-doped hydroxyapatite (Tb-HA) nanocrystallines

We synthesized Tb3+ -doped hydroxyapatite (Tb-HA) nanocrystallines, highlight the effect of calcinations temperature on the luminescence intensity and fluorescent lifetime of the samples. The luminescent intensity of Tb-HA, which showed the fluorescence quenching, firstly enhanced and then decreased at 700 °C; while the fluorescent lifetime increased firstly and then decreased after 600 °C. The effects of calcinations temperature on the luminescence property of Tb-HA were mainly related with the changes of microstructure and local symmetry around the ions of luminous center.183