YNbO_4粉末材料中Er^(3+)发光研究及其光谱性质J-O计算  

Luminescence Characteristics of Er^(3+) in YNbO_4 Powder Materials and J-O Calculation of Its Spectrum

作　　者：牛春晖[1] 任宣玮 李晓英[1] 吕勇[1] 孟浩[1] 

机构地区：[1]北京信息科技大学仪器科学与光电工程学院,北京100192

出　　处：《发光学报》2016年第5期519-525,共7页Chinese Journal of Luminescence

基　　金：北京市自然科学基金资助青年项目(4154071);北京市优秀人才培养资助青年骨干个人项目(201400002012G105);北京市教委面上项目(SQKM201211232007)资助

摘　　要：为了研究Er^(3+)/Yb^(3+)共掺杂YNb O4粉末材料上转换发光特性,采用J-O理论计算了该材料的光谱性质。根据吸收谱各吸收峰面积拟合出谱线强度参数,并根据谱线强度参数计算出理论振子强度和实验振子强度,得到两者均方差为δrms=3.916×10-7。计算了YNb O4粉末材料中Er^(3+)粒子的跃迁几率、跃迁分支比及能级寿命等参数,并计算得到了Er^(3+)离子从能级2H11/2、4S3/2和4F9/2到基态辐射跃迁的受激发射截面。研究结果表明YNb O4材料是一种优良的上转换基质材料。In order to study up-conversion luminescence characteristics of Er（3＋）/ Yb（3＋）co-doped YNb O4 powder materials,the spectrum property was calculated by using J-O theory in this paper. The spectrum intensity parameters were obtained by the fitting method based on the absorption peak＇s area of the absorption spectrum,and the theoretical oscillator intensity and the experimental oscillator intensity were figured out according to the spectrum intensity parameters,and the mean square deviation of them（ δrms） was 3. 916 × 10- 7. The parameters such as the transition probability,transition branching ratio and energy level life etc. of Er（3＋）particles in YNb O4 powder materials were calculated,and the stimulated emission cross section of Er（3＋）radiative transition from the energy level2H11 /2,4S3 /2and4F9 /2to the ground state was also figured out. The experimental results show that YNb O4 is one kind of superior up-conversion matrix materials.

关 键 词：YNbO4 J-O理论 上转换发光 

分 类 号：O482.31[理学—固体物理] O614.33[理学—物理]