Comparative photoluminescence study of MAlB3O7:Dy3+ (M=Ca, Sr) phosphor for solid-state lighting applications

The MAlB3O7:Dy3+ (M=Ca, Sr) phosphor is prepared by a simple combustion method successfully. The given phosphor is characterized by X-ray diffraction spectroscopy, photoluminescence (Pl) excitation and emission spectra. Functional group is identified by FTIR (Fourier transmission infrared spectroscopy). Photoluminescence excitation spectra show the characteristic peaks at 324 nm, 350 nm, 365 nm and 388 nm for matrix CaAlB3O7, while 350 nm, 365 nm and 388 nm, respectively, for matrix SrAlB3O7 were the emission peaks obtained at 483 and 575 nm for the given matrix. The MAlB3O7:Dy3+ (M=Ca, Sr) phosphor is prepared for different compositions of Dy3+ (Dy3+ = 0.1, 0.3, 0.5, 0.7 and 1.0 mol%) ion, and the saturation effect is observed where the most intense peak was found for the composition Dy3+ = 0.7 mol%. Comparative analysis of emission spectra reveals that calcium-based phosphor exhibits the highest emission intensity. The photoluminescence (Pl) property for the matrix MAlB3O7:Dy3+ (M=Ca, Sr) proved that the given matrix is one of the promising compounds for solid-state lighting.