[en] RE"3"+ (RE"3"+ = Eu"3"+, Dy"3"+ and Ce"3"+) doped Ca_3Al_2Si_3O_1_2 phosphors are prepared at 600 °C by a combustion method. The phase and crystallanity of the synthesized materials is investigated by x-ray diffraction. Luminescence characteristics were analyzed by using photoluminescence spectra. Here Ca_3Al_2Si_3O_1_2: Eu"3"+ phosphor shows strong emission bands at 581, 592, 615 under 396 nm excitation wavelengths. Dy"3"+ emission band is observed at, 437, 484, 577 under 348 nm excitation wavelength. Whereas Ce"3"+ shows isolated blue emission bands at 440 nm keeping excitation wavelength constant at 355 nm. Also spin–orbit splitting difference in "2F_7_/_2 and "2F_5_/_2 ground state level of Ce"3"+ ions is studied using curve fitting analysis. Thus, the present phosphor may applicable for near ultraviolet excited white light emitting diode. (paper)