Luminescent properties of Sr2MgSi2O7 and Ca2MgSi2O7 long lasting phosphors activated by Eu, Dy |
| |
Authors: | Qin Fei Chengkang Chang Dali Mao |
| |
Affiliation: | State Key Laboratory of Metal Matrix Composites, Shanghai Jiaotong University, 1954 Huashan Road, Shanghai 200030, PR China |
| |
Abstract: | Long lasting afterglow phosphors Sr2MgSi2O7:Eu,Dy and Ca2MgSi2O7:Eu,Dy were prepared by solid-state reaction method. It is revealed by the results that both phosphors show two emission peaks that are caused by the different emitting centers Eu2+ held in the host lattice. Wavelength shift was observed due to the slight differences in the structure parameters of the two hosts. Investigation on afterglow property shows that Sr2MgSi2O7:Eu,Dy phosphor held a better afterglow property than Ca2MgSi2O7:Eu,Dy phosphor. Thermal simulated luminescence study indicates that the long afterglow is generated by a higher trap concentration formed by the co-doped rare earth ions within the host. |
| |
Keywords: | Luminescence Phosphor Alkaline earth silicates Long afterglow |
本文献已被 ScienceDirect 等数据库收录! |
|