用固相法制备化合物CaY1 -xBO4∶xEu ,研究Eu3+在CaYBO4中的取代格位和发光特性。当Eu3+掺杂浓度不大时 ,存在两个发光中心 ,认为是取代基质中有两个Y格位的结果 ;通过对Eu O的电荷迁移激发带位置的分析 ,表明Eu3+所处八面体中心格位的对称性越低 ,Eu O的电荷迁移带越偏向于短波 ;当Eu3+的掺杂浓度较大 (x >0 1 0 )时 ,Eu3+离子也可占据Ca2 +格位 ,同时Eu3+还原成Eu2 +。 The compound CaY1-xBO4: xEu was prepared by the solid-state method, and the substituted lattice sites and luminescent properties of Eu3 + in CaYBO4 were studied. When the doping concentration of Eu3 + is not large, there are two luminescent centers, which are considered as the result of substituting two Y sites in the matrix. The Eu3 + The lower the symmetry of the Eu3 + ion, the more the charge transfer band of EuO tends to be short-wave. When the doping concentration of Eu3 + is large (x> 0 10), the Eu3 + ions occupy the Ca2 + +.