Electron and Hole Trapping in Ce3+- and Pr3+-Doped Lutetium Pyrosilicate Scintillator Crystals Studied by Electron Paramagnetic Resonance
文献类型：期刊论文
| 作者 | Laguta, V; Buryi, M; Wu, Y; Ren, G; Nikl, M |
| 刊名 | PHYSICAL REVIEW APPLIED
 |
| 出版日期 | 2020-04-23 |
| 期号 | 4 |
| ISSN号 | 2331-7019 |
| DOI | 10.1103/PhysRevApplied.13.044060 |
| 文献子类 | Article |
| 英文摘要 | Electron and hole trapping is studied in the Ce3+- and Pr3+-doped Lu2Si2O7 scintillation single crystals (LPS:Ce and LPS:Pr) by electron paramagnetic resonance (EPR). Detailed EPR measurements of the x-ray irradiated LPS crystals reveal that holes generated by irradiation are predominantly trapped at oxygen lattice ions creating O- centers. The same x-ray irradiation creates also electron-type centers, which are attributed to Lu2+ ions, where the trapped electron at the Lu lattice ion is stabilized by a nearby defect, such as the oxygen vacancy and Ir3+ impurity ion. Both the hole and electron centers can be thus considered as a bound small polaron, which makes the charge trapping in a scintillation mechanism quite competitive. The hole O- and electron Lu2+ centers show thermal stability well above room temperature. Thermal decays of their concentrations correlate well with the appearance of the thermally stimulated luminescence glow peaks at 470-550 K. The presence of the same intrinsic traps in the Ce- and Pr-doped LPS crystals suggests that the difference in the light yield of these crystals is an intrinsic property of the Ce3+ and Pr3+ activator centers in the LPS lattice. An origin of charge traps in this pyrosilicate structure and their role in the scintillation mechanism is compared with the results previously described in the literature on orthosilicates. |
| WOS关键词 | LUMINESCENCE ; PR3+ ; DEFECTS ; TRAPS |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28119]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Laguta, V,Buryi, M,Wu, Y,et al. Electron and Hole Trapping in Ce3+- and Pr3+-Doped Lutetium Pyrosilicate Scintillator Crystals Studied by Electron Paramagnetic Resonance[J]. PHYSICAL REVIEW APPLIED,2020(4). |
| APA | Laguta, V,Buryi, M,Wu, Y,Ren, G,&Nikl, M.(2020).Electron and Hole Trapping in Ce3+- and Pr3+-Doped Lutetium Pyrosilicate Scintillator Crystals Studied by Electron Paramagnetic Resonance.PHYSICAL REVIEW APPLIED(4). |
| MLA | Laguta, V,et al."Electron and Hole Trapping in Ce3+- and Pr3+-Doped Lutetium Pyrosilicate Scintillator Crystals Studied by Electron Paramagnetic Resonance".PHYSICAL REVIEW APPLIED .4(2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。