SrB_4O_7掺杂二价镧系离子的荧光光谱特性研究  

Fluorescent Characteristics of Strontium Tetraborate(SrB_4O_7)Doped with Divalent Lanthanide Elements

作　　者：敬秋民[1] 刘盛刚[1] 刘永刚[2] 毕延[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,冲击波物理与爆轰物理重点实验室,四川绵阳621900 [2]西南科技大学分析测试中心,四川绵阳621010

出　　处：《光谱学与光谱分析》2016年第1期130-133,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(11304294);冲击波物理与爆轰物理重点实验室基金项目(9140C670201140C67281);中国工程物理研究院科学与技术发展基金项目(2013B0401062)资助

摘　　要：采用高温固相法通过掺杂不同种类的镧系元素以及改变掺杂元素的浓度制备了系列SrB_4O_7∶Re^(2+)(Re代表Ce,Nd,Gd和Lu)荧光材料,利用实验室自建的非偏振显微共聚焦荧光/拉曼测量系统重点研究了其荧光光谱特性。研究发现,SrB_4O_7∶Re^(2+)和SrB_4O_7∶Sm^(2+)具有相似的荧光特性,最强单峰对应~5 D_0-~7 F_0电子跃迁所产生的荧光峰(0-0峰),峰位为685.41nm;在700和730nm附近还对应有~5 D_0-~7 F_1和~5 D_0-~7 F_2电子跃迁所产生的两条强度较弱的荧光带;在相同条件下,SrB_4O_7∶Re^(2+)的0-0峰强度较SrB_4O_7∶Sm^(2+)的0-0峰强度至少要弱一个量级。对SrB_4O_7∶Re^(2+)荧光光谱分析结果显示,掺杂元素种类和掺杂元素浓度是影响荧光光谱强度的关键因素,两者直接决定了能参与发光的Re^(2+)离子的总量。Strontium borate doping with different lanthanide bivalent ions and concentration（SrB_4O_7∶Re^2＋）were synthesized by the high-temperature solid state method.The fluorescent spectral characteristics of SrB_4O_7∶Re^2＋were investigated by the non-polarization con-foucus fluorescence/raman measurement system built by us.The results indicate that the fluorescent spectral characteristics of SrB_4O_7∶Re^2＋is very similar to that of SrB_4O_7∶Sm^2＋.The most strong fluorescence line（0-0line）arises from^5 D_0-~7 F_0 electron transition and the wavelength is 685.41 nm.In addition,two fluorescent bands coming from^5 D_0-~7 F_1and^5 D_0-~7 F_2 electron transition are observed near 700 and 730nm,respectively.The intensity of 0-0line of SrB_4O_7∶Re^2＋is at least a magnitude smaller than that of SrB_4O_7∶Sm^2＋.A further study on the fluorescent spectrums of SrB_4O_7∶Re^2＋shows that the doping elements and concentration both are the key points that affect the intensity of the fluorescent peaks,which directly decide the amount of Re^2＋concerned with irradiance.

关 键 词：高温固相法 掺杂 SrB4O7∶Re^2+ 荧光 

分 类 号：O433.1[机械工程—光学工程]