摘要
The synthesis of cerium-doped lutetium oxyorthosilicate(LSO)polycrystalline powders was investigated by a hydrothermal proc-ess.The precursor was obtained by the hydrothermal reaction of Lu(NO_(3))_(3)with Na_(2)SiO_(3)at 200℃for 10 h by using urea as precipitator,fol-lowed by a calcination uader proper temperatures.The results of XRD indicated that the precursor was crystallized into A-type LSO phase at 1000℃,and transfetrred to B-type LSO phase when temperature was raised above 1050℃.After being heated at 1250℃for 2 h,single phase of B-type LSO powder was synthesized with homogeneous distribution of particle size ranging from 200 to 300 nm.The photolumi-nescence spectrum of as-synthesized LSO:Ce powders showed a typical broad emission peak centered at 404 nm,corresponding to the 5d^(1)-4f transition of Ce^(3+).
基金
Project supported by the National Natural Science Foundation of China(50572115)
Basic Research Key Project of Shanghai Municipal(09JC1406500)
