Jadhaw Akhilesh, Sonwane Vivek D, Gour Anubha S, Jha Piyush
Department of Physics, Government J. Yoganandam Chhattisgarh College, Raipur, India.
Department of Applied Physics, Disha Institute of Management and Technology, Raipur, India.
Luminescence. 2017 Nov;32(7):1349-1353. doi: 10.1002/bio.3331. Epub 2017 May 14.
We report the thermoluminescence properties of Sr Al SiO :Eu and Sr Al SiO :Eu Dy phosphors. These phosphors were prepared by a high-temperature solid-state reaction method. The prepared phosphors were characterized by X-ray diffraction. A 254 nm source was used for ultraviolet (UV) irradiation and a Co source was used for γ-irradiation. The effect of heating rate and UV-exposure were examined. The thermoluminescence temperature shifts to higher values with increasing heating rate and thermoluminescence intensity increases with increasing UV exposure time. The trapping parameters such as activation energy (E), order of kinetics and frequency factor (s) were calculated by peak shape method. The effect of γ- and UV-irradiation on thermoluminescence studies was also examined.
我们报道了SrAlSiO:Eu和SrAlSiO:Eu Dy磷光体的热释光特性。这些磷光体采用高温固态反应法制备。通过X射线衍射对制备的磷光体进行了表征。使用254 nm光源进行紫外线（UV）辐照，使用钴源进行γ辐照。研究了升温速率和UV曝光的影响。热释光温度随升温速率的增加而向更高值移动，热释光强度随UV曝光时间的增加而增加。通过峰形法计算了俘获参数，如激活能（E）、动力学级数和频率因子（s）。还研究了γ辐照和UV辐照对热释光研究的影响。
