Pb2+ doped CaY2Al4SiO12 garnet phosphor

CaY2Al4SiO12 garnet phosphor doped with different Pb2+ concentrations were synthesized using sol-gel method. X-ray diffraction analysis confirmed that all samples crystallized in the cubic structure of garnet with la3d space group. Emission and excitation bands of Pb2+ doped CaY2Al4SiO12 were observed at 362 and 258 nm, respectively. The maximum emission was obtained for the sample doped with 0.07 mol of Pb2+. Stokes shift of CaY2Al4SiO12:Pb2+ phosphor was calculated to be 11,135 cm−1. The luminescence behavior of the Pb2+ ion in CaY2Al4SiO12 garnet is discussed.