| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Moll, Adrien
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024A multiscale approach to enhance the thermoelectric properties of α-SrSi 2
- 2023Effect of the nanostructuring on the thermoelectric properties of SrSi 2 alloys
- 2023A multiscale approach to improve the thermoelectric performances of alkaline-earth-silicide alloys
- 2023Lattice Dynamics, Transport and Thermoelectric Properties of Bi-Sb Alloys Obtained by Mechanical Alloying and Spark Plasma Sintering
- 2023Thermoelectric Properties of High‐Entropy Wolframite Oxide: (CoCuNiFeZn)<sub>1−<i>x</i></sub>Ga<sub><i>x</i></sub>WO<sub>4</sub>citations
- 2021New promising ternary intermetallic compounds selected by screening calculations
- 2020Microstructural and transport properties of Mg doped CuFeO2 thin films: A promising material for high accuracy miniaturized temperature sensors based on the Seebeck effectcitations
- 2020Microstructural and transport properties of Mg doped CuFeO2 thin films: A promising material for high accuracy miniaturized temperature sensors based on the Seebeck effectcitations
- 2020Influence of Nanostructuration on the Vibrational, Electronic and Optical Properties of CrSi 2 Thin Filmscitations
- 2020Influence of Nanostructuration on the Vibrational, Electronic and Optical Properties of CrSi<sub>2</sub> Thin Filmscitations
- 2019Thermoelectric properties and stability of nanostructured chromium disilicide CrSi 2citations
- 2017Mechanical alloying as a new synthesis route for metastable silicon clathratescitations
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article
Influence of Nanostructuration on the Vibrational, Electronic and Optical Properties of CrSi<sub>2</sub> Thin Films
Abstract
We report a detailed experimental investigation of the influence of the formation of nano-crystallites on the vibrational, electronic and optical properties of CrSi<sub>2</sub> thin films. Both amorphous and nanostructured thin films were investigated by means of electrical resistivity, Hall effect measurements as well as Raman and infrared spectroscopies. We show that both types of films exhibit a semiconducting-like behavior, with the notable difference that the high defect concentrations in amorphous films act as hole donors, modifying the electronic band structure and optical constants. The effect of the film thickness on electrical properties is well captured by the Fuchs-Sondheimer model indicating a decrease in the charge carrier mean free path, likely due to the formation of amorphous/nano-crystallite interfaces that contribute to strongly scatter the charge carriers. Raman spectroscopy performed on nano-crystallized thin films evidences the presence of a Raman-active mode at 229 cm<sup>-1</sup> and confirms DFT calculations predicting a mode at 248 cm<sup>-1</sup>, the observation of which had remained elusive so far in polycrystalline CrSi<sub>2</sub>. Measurements of the refractive index and dielectric constants of amorphous thin films show a very high refractive index in the mid-IR range. Our results illustrate how the controlled growth of nano-crystallites can be used to tailor the electronic, vibrational and optical properties of amorphous thin films.