Electron sensitivity, photosensitivity and thermoplasticity of copper-doped Ge25Se75 thin films prepared via spin-coating
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39923188" target="_blank" >RIV/00216275:25310/25:39923188 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/25:10508644
Result on the web
<a href="https://doi.org/10.1016/j.apsusc.2025.163848" target="_blank" >https://doi.org/10.1016/j.apsusc.2025.163848</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2025.163848" target="_blank" >10.1016/j.apsusc.2025.163848</a>
Alternative languages
Result language
angličtina
Original language name
Electron sensitivity, photosensitivity and thermoplasticity of copper-doped Ge25Se75 thin films prepared via spin-coating
Original language description
Copper-doped Ge25Se75 thin films were deposited via spin-coating using anhydrous copper(I) or copper(II) chloride precursors to examine the effects of Cu oxidation states on film properties. The solution processing offered a cost-effective route with a mass production potential of perspective Cu-doped chalcogenide materials. The Energy-dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS) techniques confirmed the Cu incorporation at its targeted concentration (5 at.%). The XPS also revealed a reduction of Cu2+ to Cu+ oxidation form, presumably already in the solution phase. Optical characterisation revealed a redshift in the bandgap due to Cu-Se bond formation while annealing at 210 degrees C led to partial crystallisation, forming CuGeSex-like phases. The combination of wet etching with electron beam lithography and optical holography showed a significant increase in the stability of copper-doped material. Similarly, the thermoplasticity of copper-doped samples was affected as the hot embossing temperature dramatically shifted towards higher temperatures. However, despite having the same Cu+ oxidation state, the selected copper precursor still significantly influenced the majority of studied phenomena. These findings prove that Cu doping in the solution phase modifies the optical, mechanical and potentially electrical properties of Ge25Se75 thin films, making them viable for resistive memory or high-temperature photonic applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20506 - Coating and films
Result continuities
Project
<a href="/en/project/EH22_008%2F0004591" target="_blank" >EH22_008/0004591: Ferroic Multifunctionalities</a><br>
Continuities
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Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Surface Science
ISSN
0169-4332
e-ISSN
1873-5584
Volume of the periodical
709
Issue of the periodical within the volume
November 2025
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
163848
UT code for WoS article
001520603800001
EID of the result in the Scopus database
2-s2.0-105008500477