Journal of Materials Science: Materials in Electronics ( IF 2.8 ) Pub Date : 2020-06-18 , DOI: 10.1007/s10854-020-03789-7 Tatsuya Matsuo , Takumi Kato , Hiromi Kimura , Fumiya Nakamura , Daisuke Nakauchi , Noriaki Kawaguchi , Takayuki Yanagida
Li-codoped MgF2:Tb ceramics with different Li concentrations (0.01, 0.1, 1, and 3 mol%) were prepared by the spark plasma sintering method, and photoluminescence (PL), scintillation, and dosimetric properties were investigated. Sharp peaks due to 4-4 f transitions of Tb3+ ion were observed in all of PL, scintillation, and thermally-stimulated luminescence (TSL). TSL glow curves confirmed that the TSL intensity was increased by Li-codoping without an increase of QY values. Especially, the TSL intensity was the highest in 1% Li-codoped MgF2:Tb, which was approximately 2.2 times larger than that of MgF2 doped with only Tb. Moreover, It was confirmed that the TSL responses of the 0.01, 0.1 and 1% Li-codoped MgF2:Tb ceramics were very sensitive to irradiation dose and showed a good linearity from 0.01 to 1000 mGy.
中文翻译:
掺锂的MgF2:Tb陶瓷的剂量学性能评估
通过火花等离子体烧结法制备了不同Li浓度(0.01、0.1、1和3 mol%)的Li掺杂MgF 2:Tb陶瓷,并研究了光致发光(PL),闪烁和剂量特性。在所有的PL,闪烁和热激发发光(TSL)中均观察到由于Tb 3+离子的4-4 f跃迁而导致的尖峰。TSL辉光曲线证实,通过锂共掺杂可提高TSL强度,而不会增加QY值。尤其是,在1%的Li掺杂的MgF 2:Tb中,TSL强度最高,约为仅掺杂Tb的MgF 2的2.2倍。此外,已证实0.01、0.1和1%的Li掺杂MgF的TSL响应2:Tb陶瓷对辐照剂量非常敏感,并且在0.01至1000 mGy之间显示出良好的线性。