A novel sol-gel processing was developed to synthesize polycrystalline cerium-doped lutetium pyrosilicate(Lu2Si2O7:Ce,LPS:Ce)powders under low temperature.It was found that the addition of propylene oxide(PPO)could promote the formation of Lu-O-Si bonds in precursor,which was beneficial to the formation of LPS phase.X-ray diffraction(XRD)patterns indicated that the single-phased LPS powder was well crystallized at 1050°C.Microstructure observation demonstrated that the synthetic LPS powder was composed of ellipsoidal grains with the mean size of 40 nm.The luminescent properties were characterized by photoluminescence(PL),X-ray excited luminescence(XEL)and vacuum ultraviolet(VUV)spectroscopy at room temperature.The synthetic LPS:Ce powder emitted a broad emission spectrum centered at about 380 nm,which should be ascribed to the 5d→4f transition of Ce3+.Decay time of the synthetic LPS:Ce powder was measured to be only 32 ns. A novel sol-gel processing was developed to synthesize polycrystalline cerium-doped lutetium pyrosilicate (Lu2Si2O7: Ce, LPS: Ce) powders under low temperature. It was found that the addition of propylene oxide (PPO) could promote the formation of Lu-O -Si bonds in precursor, which was beneficial to the formation of LPS phase. X-ray diffraction (XRD) patterns indicated that the single-phased LPS powder was well crystallized at 1050 ° C. Microstructure structure demonstrated that the synthetic LPS powder was composed of ellipsoidal grains with the mean size of 40 nm. The luminescent properties were characterized by photoluminescence (PL), X-ray excited luminescence (XEL) and vacuum ultraviolet (VUV) spectroscopy at room temperature. emission spectrum centered at about 380 nm, which should becribed to the 5d → 4f transition of Ce3 +. Decay time of the synthetic LPS: Ce powder was measured to be only 32 ns.