Luminescence, lattice occupancy and application of a new anti-counterfeiting for SrGa₂Si₂O₈: Eu^3-

Eu3+ doped in SrGa2Si2O8 particles can be an effective tool for designing dual-mode anti-counterfeiting materials based on their tunable luminescence transformation and excitation wavelength-dependent emission. The structure was analyzed by XRD and crystal structure diagram. Self-activated luminescence of SrGa2Si2O8 host is luminescent in blue region. By adjusting the excitation wavelength, the sample's color changes from white to red. It is found that Eu3+ occupies the Sr ion lattice in SrGa2Si2O8 matrix preferentially by band theory calculation. Our results demonstrate that this new phosphor shows a potential for the application of anti-counterfeiting materials.