中文摘要：

采用高温固相法合成了Ba2MgSi2O7：RE（RE=Eu^2＋,Ce^3＋,Tb^3＋）系列荧光粉,研究了其结构和光谱特性.样品的XRD衍射图表明稀土离子的掺入没有引起基质晶格结构的变化.样品Ba2MgSi2O7：Ce^3＋在紫外光激发下呈蓝紫色发射,而样品Ba2MgSi2O7：Eu^2＋在紫外光激发下呈绿色发射.对样品Ba2MgSi2O7：Eu^2＋的光谱分析表明Eu2＋在焦硅酸钡体系中可能占据两个不同格位.此外还分析了Ce^3＋,Eu^2＋和Ce^3＋,Tb^3＋共激活焦硅酸钡盐在紫外光激发下的光谱特性,并对其中存在的能量传递机理进行了讨论.

英文摘要：

In the present paper, alkaline earth silicates Ba2MgSi2O7 ： RE were prepared under a reducing atmosphere by solidstate reaction. Under UV light excitation, Ce^3＋ doped pyrosilicates phosphors emit efficient bluish violet light. The emission spectra of Eu^2＋ doped pyrosilicates phosphors showed that Eu^2＋ ions could occupy two types of sites in Ba2MgSi2O7 host. The energy transfer from Ce^3＋ to Eu^2＋ in Ba2MgSi2O7 is efficient, as there is a large overlap between Ce^3＋ emission bands and Eu^2＋ excitation bands. Analysis of the spectra of Ce^3＋ and Tb^3＋ co-doped phosphor indicated the existence of energy transfer from Ce^3＋ to Tb^3＋ in Ba2MgSi2O7 under UV excitation.