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超快X射线诱导的损伤和硫化物中的非热化

Nikita Medvedev^1,2, Aldo Artímez Peña^1,3

¹Institute of Physics, Czech Academy of Sciences, Na Slovance 1999/2, 182 00 Prague 8, Czech Republic.

Physical chemistry chemical physics : PCCP

|April 3, 2025

概括

硫化 (CdS) 的超快XUV/X射线照射揭示了损伤机制和值. 模拟显示热和非热效应影响材料相位,可能通过激光照射实现带隙调整.

科学领域:

材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学
光学和光子学在光学和光子学.

背景情况:

硫化 (CdS) 对太阳能电池,光伏和辐射探测器至关重要.
了解CdS物质损伤和辐射下的值对于设备的寿命和性能至关重要.

研究的目的:

模拟和分析超快XUV/X射线辐射对硫化 (CdS) 的超快XUV/X射线辐射影响.
调查物质损伤机制,损伤值,以及对高能辐射反应的相变.

主要方法:

利用组合的XTANT-3模型模拟超快的XUV/X射线照射.
考虑了不平衡的电子和原子动力学,非adiabatic合和非热化.
分析了电子刺激对键断和材料相变的作用.

主要成果:

混合物和CdS的石阶段都表现出类似的损伤值 (∼0.4-0.5 eV/原子).
最初的损伤主要是热效应,过渡到非热效应,并在更高剂量时化.
辐射CdS形成高密度的液态,可能是半导体或金属,可能再结晶为晶体或无形相.

结论:

超快速照射在CdS中诱导复杂的损伤动态,涉及热和非热过程.
该研究证明了通过激光照射在CdS中可控制的带隙调整的潜力.
这些发现有助于理解材料弹性和开发新型光电子应用.

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