Fluorescent Characteristics of Strontium Tetraborate (SrB4O7) Doped with Divalent Lanthanide Elements
JING Qiu-min1, LIU Sheng-gang1*, LIU Yong-gang2, BI Yan1
1. National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China 2. Center for Analysis and Test, Southwest University of Science and Technology, Mianyang 621010, China
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.
Key words：High temperature solid state method;SrB4O7∶Re2+;Doping;Bivalent ions;Fluorescence
