中文摘要：

采用溶胶凝胶法制备了Bi4Si3O（12）：Sm^（3＋）荧光粉体,并用X射线衍射（XRD）、扫描电镜（SEM）和荧光光谱（PL）对Bi4Si3O（12）：Sm^（3＋）荧光粉的结构和发光性能进行表征。研究发现：在850℃煅烧下得到Bi4Si3O（12）纯相;PL谱表明该粉体从近紫外到蓝光范围内都可以得到有效激发。在紫外光激发下,产物有4个发射峰,分别位于468 nm和563 nm,600 nm,649 nm,归属于Bi^（3＋）的3P1→1S0跃迁和Sm^（3＋）的^4G（5/2）→^6HJ（J=5/2,7/2,9/2）能级跃迁,并对Bi^（3＋）和Sm^（3＋）之间的能量传递机制进行讨论。在467 nm的蓝光激发下粉体呈现橙黄色发光,发射峰来源于Sm^（3＋）的^4G（5/2）→^6HJ特征辐射跃迁,且最强发射峰位于563 nm处,Sm^（3＋）的最佳掺杂浓度为3mol%。

英文摘要：

Bi4Si3O（12）：Sm^（3＋）phosphors were prepared by a sol-gel technique. The crystal structure and its luminescence properties were investigated by X-ray diffraction（ XRD）,scanning electron microscopy（ SEM） and fluorescence spectra（ PL）. The phase of the synthesized samples calcinated at 850 ℃ is pure Bi4Si3O（12） according to X-ray diffraction results. The luminescence spectra shows that Bi4Si3O（12）：Sm^（3＋）phosphors could be excited effectively by the light from ultraviolet ray to blue light. The energy transfer process from Bi^（3＋） to Sm^（3＋）under 260 nm excitation was discussed. The obtained phosphors exhibites a strong band at 468 nm belonging to the^3P1→^1S0transition of Bi^（3＋）,and another three emissions peaks at563 nm,600 nm,and 649 nm,which comes from ^4G（5/2）→^6HJ（ J = 5/2,7/2,9/2） transition of Sm^（3＋）.While under excitation with 467 nm,only characteristic emission of Sm^（3＋）corresponding to the ^4G（5/2）→^6HJ（ J = 5/2,7/2,9/2） transition are found. The optimum dopant concentration of Sm^（3＋）in（ Bi（1-x） Smx）4Si3O（12） is 3mol%.