Ultrafast X-ray induced damage and nonthermal melting in cadmium sulfide

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00619135" target="_blank" >RIV/68378271:_____/25:00619135 - isvavai.cz</a>
Alternative codes found
RIV/61389021:_____/25:00647881
Result on the web
<a href="https://hdl.handle.net/11104/0370447" target="_blank" >https://hdl.handle.net/11104/0370447</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d5cp00525f" target="_blank" >10.1039/d5cp00525f</a>

Result language
angličtina
Original language name
Ultrafast X-ray induced damage and nonthermal melting in cadmium sulfide
Original language description
Cadmium sulfide is a valuable material for solar cells, photovoltaic, and radiation detectors. It is thus important to evaluate the material damage mechanisms and damage threshold in response to irradiation. Here, we simulate the ultrafast XUV/X-ray irradiation of CdS with the combined model, XTANT-3. It accounts for nonequilibrium electronic and atomic dynamics, nonadiabatic coupling between the two systems, nonthermal melting and bond breaking due to electronic excitation. We find that the two phases of CdS, zinc blende and wurtzite, demonstrate very close damage threshold dose of B0.4–0.5 eV per atom. The damage is mainly thermal, whereas with increase of the dose, nonthermal effects begin to dominate leading to nonthermal melting. The transient disordered state is a highdensity liquid, which may be semiconducting or metallic depending on the dose. Later recrystallization may recover the material back to the crystalline phase, or at high doses create an amorphous phase with variable bandgap. The revealed effects may potentially allow for controllable tuning of the band gap via laser irradiation of CdS.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
<a href="/en/project/LM2023068" target="_blank" >LM2023068: Prague Asterix Laser System</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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