Y_2O_2S:Er^(3+),Yb^(3+)的制备及Er^(3+)离子在晶场中的能级分裂  

Preparation of Y_2O_2S:Er^(3+),Yb^(3+) and Energy Split of Er^(3+) Ion

作　　者：柏朝晖[1] 李秀贤[1,2] 张希艳[1] 卢利平[1] 刘全生[1] 米晓云[1] 

机构地区：[1]长春理工大学材料科学与工程学院,长春130022 [2]朝鲜民主主义人民共和国理科大学物理系

出　　处：《无机化学学报》2012年第4期674-678,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.50472027)资助项目

摘　　要：采用沉淀法制备前驱体,通过不同温度合成了上转换发光材料Y2O2S∶Er3+,Yb3+,运用XRD,SEM和上转换发射光谱对其进行表征。结果表明,所合成的Y2O2S∶Er3+Yb3+属于六方晶系晶体,随着合成温度的升高,产物的粒径不断增大,上转换发射光强度逐渐增加。研究Y2O2S∶Er3+Yb3+的上转换发光过程,红光发射和绿光发射分别源于Er3+离子的4F9/2→4I15/2以及2H11/2→4I15/2,4S3/2→4I15/2能级跃迁。利用群论计算了晶场中Er3+离子的能级分裂数目。The up-conversion luminescence material yttrium oxysulfide doped with Yb3＊/Er3＋ was synthesized by the solid-state reaction method, with the precursor synthesized by the co-precipitation method. The sample was measured by the XRD, SEM and upconvertion luminescence spectra, respectively. The results show that the sample is with the hexagonal crystal structure, and with the increase of sintering temperature, the particle size increases, and also the intensity of the upconversion luminescence. The red emission and the green emission results from the 4F9/2→4I15/2 and the 2H11/2→4I15/2,4S3/2→4I15/2transitions of Er3＋ ions. The sum number of the energy split was ealeulated by the group theory.

关 键 词：Y2O2S∶Er3+ Yb3+ 上转换发光 能级分裂 

分 类 号：O614.33[理学—无机化学]