对于室温辐射检测的CsPbBr3矿晶体的辐射稳定性和缺陷特性
Zhifu Liu1, John A Peters1,2, Khasim Saheb Bayikadi3
1Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA.
The Journal of chemical physics
|July 17, 2025
概括
化 (CsPbBr3) 矿晶体表现出极好的辐射硬度. 高剂量的马辐射并没有显著改变缺陷度,证实它们适用于辐射检测应用.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 核仪器仪表 核仪器仪表 核仪器仪表
背景情况:
- 在室温辐射检测中,对CsPbBr3矿晶体的辐射稳定性至关重要.
- 了解缺陷的起源和负载运输机制是评估材料性能的关键.
研究的目的:
- 研究高剂量的60Co玛辐射对CsPbBr3矿晶体缺陷特征的影响.
- 评估CsPbBr3的辐射稳定性和辐射检测潜力.
主要方法:
- 光发光 (PL) 分析以研究辐射重组和带尾部.
- 热刺激电流 (TSC) 光谱法用于识别陷水平和缺陷度.
- 对产品辐射后的能量分辨率和孔移动性寿命的评估.
主要成果:
- PL分析表明,辐射重组和带尾随与点缺陷和障碍相关.
- TSC显示了0.14到0.64 eV之间的陷水平,空位和间隙的度很低.
- 照射导致总缺陷度略有下降,但对能量分辨率或移动性寿命产品没有显著影响.
结论:
- CsPbBr3矿晶体表现出显著的辐射硬度,在1Mrad 60Co马辐射后,缺陷度的变化最小.
- 内在的低缺陷度得到了良好维护,支持CsPbBr3作为先进辐射探测器和光电子设备的有前途材料.
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