Phosphors with controlled emission spectra are of great interest due to their application for white light emitting diodes.Herein, a new class of Sr3Y2(SiO3)6:Ce3+,Tb3+ phosphors were synthesized by a facile sol-gel combustion method. The phase structure,morphology, and luminescence properties of the phosphors were characterized by using powder X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), and photoluminescence excitation and emission spectra,respectively. The results on luminescence properties indicated that co-doped Ce3+ ions served as UV-light sensitizers with excitation energy partially transferred to Tb3+ ions, leading to green emission from Tb3+. Particularly, the corresponding emitting colors of the phosphors could be well-tuned from deep blue(0.16, 0.05) to green region(0.25, 0.45) by adjusting the molar ratio of Ce3+/Tb3+.
