光谱学与光谱分析, 2016, 36 (1): 130, 网络出版: 2016-02-02
SrB4O7掺杂二价镧系离子的荧光光谱特性研究
Fluorescent Characteristics of Strontium Tetraborate (SrB4O7) Doped with Divalent Lanthanide Elements
高温固相法 掺杂 荧光 High temperature solid state method SrB4O7∶Re2+ Doping SrB4O7∶Re2+ Bivalent ions Fluorescence
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SrB4O7∶Re2+(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, SrB4O7∶Re2+和SrB4O7∶Sm2+具有相似的荧光特性, 最强单峰对应5D0-7F0电子跃迁所产生的荧光峰(0-0峰), 峰位为685.41 nm; 在700和730 nm附近还对应有5D0-7F1和5D0-7F2电子跃迁所产生的两条强度较弱的荧光带; 在相同条件下, SrB4O7∶Re2+的0-0峰强度较SrB4O7∶Sm2+的0-0峰强度至少要弱一个量级。 对SrB4O7∶Re2+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Re2+离子的总量。
Abstract
Strontium borate doping with different lanthanide bivalent ions and concentration (SrB4O7∶Re2+) were synthesized by the high-temperature solid state method. The fluorescent spectral characteristics of SrB4O7∶Re2+ were investigated by the non-polarization con-foucus fluorescence/raman measurement system built by us. The results indicate that the fluorescent spectral characteristics of SrB4O7∶Re2+ is very similar to that of SrB4O7∶Sm2+. The most strong fluorescence line (0-0 line) arises from 5D0-7F0 electron transition and the wavelength is 685.41 nm. In addition, two fluorescent bands coming from 5D0-7F1 and 5D0-7F2 electron transition are observed near 700 and 730 nm, respectively. The intensity of 0-0 line of SrB4O7∶Re2+ is at least a magnitude smaller than that of SrB4O7∶Sm2+. A further study on the fluorescent spectrums of SrB4O7∶Re2+ 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 Re2+ concerned with irradiance.
敬秋民, 刘盛刚, 刘永刚, 毕延. SrB4O7掺杂二价镧系离子的荧光光谱特性研究[J]. 光谱学与光谱分析, 2016, 36(1): 130. JING Qiu-min, LIU Sheng-gang, LIU Yong-gang, BI Yan. Fluorescent Characteristics of Strontium Tetraborate (SrB4O7) Doped with Divalent Lanthanide Elements[J]. Spectroscopy and Spectral Analysis, 2016, 36(1): 130.