中文摘要：

采用高温固相法合成了Ca3Y2-2x（Si3O9）2：2xSm^3＋系列荧光粉，并表征了材料的发光特性.X射线衍射图谱表明：得到的样品为纯相Ca3Y2（Si3O9）2晶体；样品的激发光谱主要来源于Sm^3＋的特征激发；分别采用紫外、近紫外和蓝光作为激发源，样品均发射橙红光.在402 nm近紫外光激发下，Ca3Y2（Si3O9）2：Sm^3＋发射光谱主要由3个峰组成，发射峰值分别位于565 nm、604 nm和651 nm，归属于Sm^3＋的4G5/2→6HJ/2（J=5，7，9）跃迁，其中发射主峰位于604 nm处.通过时间分辨光谱测得Sm^3＋的4G5/2能级的荧光寿命.随着Sm^3＋摩尔浓度的增加，样品发光强度先增强后减弱，当x=0.02时发光强度达到最大，浓度猝灭机理为电偶极-电偶极相互作用.

英文摘要：

A series of orange-red phosphors Ca3Y2-2x（Si3O9）2：2xSm^3＋ were synthesized by conventional solid-state reaction, and their photoluminescence properties were investigated. The X-ray diffraction （XRD） pattern shows that Ca3Y2（Si3O9）2：Sm^3＋ crystals are the pure phase. The excitation spectra contain the characteristic excitation of Sm^3＋. The emission spectra of Ca3Y2（Si3O9）2：Sm^3＋ phosphors exhibit three main peaks assigned to the 4G5/2→6HJ/2（J=5,7,9） transitions of Sm^3＋ under 402 nm excited radiation, the dominating emission peaks at 565 nm, 604 nm, 651 nm. The decay time of 4G5/2 level in Sm^3＋ was measured by the time resolved spectrum. The luminescence intensity firstly increases with increasing of Sm^3＋ concentration, and then decreases, the emission reaches the maximum intensity at x=0.02, and the concentration quenching mechanism is the electric dipole-electric dipole interaction.