Amorphous Ge-Sb-Se-Te chalcogenide films fabrication for potential environmental sensing and nonlinear photonics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F22%3A39919348" target="_blank" >RIV/00216275:25310/22:39919348 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2352847822000326" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352847822000326</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmat.2022.02.013" target="_blank" >10.1016/j.jmat.2022.02.013</a>
Alternative languages
Result language
angličtina
Original language name
Amorphous Ge-Sb-Se-Te chalcogenide films fabrication for potential environmental sensing and nonlinear photonics
Original language description
Quaternary Ge-Sb-Se-Te chalcogenide thin films were fabricated by rf magnetron sputtering from Ge19Sb17Se64-xTex (x = 5, 10, 15, 20) sputtering targets in order to select appropriate compositions for infrared sensor and optical nonlinear applications. An influence of chemical composition and deposition parameters on the optical properties, structure and wettability was thus studied. The amorphous thin films seem to be constituted by selenide entities that can include tellurium atoms in variable proportion such as [GeSe4-xTex] and [SbSe3-xTex] (x = 0, 1, 2) and Ge(Sb)-Ge(Sb) bonds according to Raman spectroscopy. Contact angle measurements of the thin films showed values of 68-71 degrees for water and their surface energies in the range of similar to 36-39 mJ.m(-2) seem suitable for surface functionalization required for photonic sensor development. Furthermore, the maximum nonlinearity at the telecom wavelength with respect to the highest figure of merit value was found for the thin film with composition Ge19Sb17Se56Te8 having nonlinear refractive index of 28 x 10(-18) m(2).W-1. Due to their low optical bandgap energies, they may find their full interest for nonlinear optics in the mid-infrared range. Wide IR transparency in combination with high (non)linear refractive indices make these materials attractive in the field of mid-IR sensing and optical nonlinear devices.
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
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GA19-24516S" target="_blank" >GA19-24516S: Chalcogenide films doped with rare-earth ions for gas sensing in the mid-infrared spectral region</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Materiomics
ISSN
2352-8478
e-ISSN
2352-8478
Volume of the periodical
8
Issue of the periodical within the volume
5
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
1009-1019
UT code for WoS article
000862964400010
EID of the result in the Scopus database
2-s2.0-85129972221