Cerium doped Y2 SiO5 (YSO)is an important scintillator material due to its high density,non-hygroscopic,excellent light output and fast decay time nature.in the paper,Y2 SiO5 ∶Ce3 + 0.2%(YSO∶Ce)was grown with high-temperature solid-phase method.The time-resolved excitation and emission spectra and fluorescent decay curves at low temperature and room tem-perature (RT)were measured and discussed.There were two types of luminescence,one was the crystal defect emission,the center at 320 nm;the other one was doped Ce3 + ions 5d →4f emission,the center at 440 nm.Only when the excitation energy (E x )was greater than the band gap width (E g ),the crystal defect emission can be observed corresponding to slow process,and the emission intensity was higher at low temperature.The crystals defect emission was hardly observed in the time-resolved emission spectra when the temperature rose to room temperature because of temperature quenching.Regions from 60 ~300 nm corresponding to emission due to 5d →4f transitions in the activator Ce3 + ions peaks at 440 nm,a plurality of excitation peaks were observed.Among them,the excitation with energy less than 6.1 eV(E x 展开▼
