| 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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Levinsky, Petr
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Topics
Publications (8/8 displayed)
- 2024AsTe 3 : A novel crystalline semiconductor with ultralow thermal conductivity obtained by congruent crystallization from parent glasscitations
- 2023The manipulation of natural mineral chalcopyrite CuFeS<sub>2</sub><i>via</i> mechanochemistry: properties and thermoelectric potentialcitations
- 2021Tl 0.6 Mo 3 S 5 , an original large tunnel-like molybdenum sulfide with Mo zigzag chains and disordered Tl cationscitations
- 2021Tl0.6Mo3S5, an original large tunnel-like molybdenum sulfide with Mo zigzag chains and disordered Tl cationscitations
- 2020Enhanced thermoelectric performance of chalcopyrite nanocomposite via co-milling of synthetic and natural minerals ; Zvýšená termoelektrická účinnost chalkopyritového nanokompozitu pomocí společného mletí syntetických a přírodních minerálůcitations
- 2020Peculiar Magnetic and Transport Properties of CuFeS2: Defects Play a Key Role ; Specifické magnetické a transportní vlastnosti CuFeS2: Defekty hrají klíčovou rolicitations
- 2019Thermoelectric properties of the tetrahedrite–tennantite solid solutions Cu 12 Sb 4−x As x S 13 and Cu 10 Co 2 Sb 4−y As y S 13 (0 ≤ x , y ≤ 4)citations
- 2016Electrical, Thermal, and Magnetic Characterization of Natural Tetrahedrites–Tennantites of Different Origin.citations
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article
Thermoelectric properties of the tetrahedrite–tennantite solid solutions Cu 12 Sb 4−x As x S 13 and Cu 10 Co 2 Sb 4−y As y S 13 (0 ≤ x , y ≤ 4)
Abstract
Tetrahedrites, a class of copper- and sulfur-rich minerals, exhibit inherently very low lattice thermal conductivity and adjustable electronic properties that make them interesting candidates for thermoelectric applications. Here, we investigate the influence of isovalent As substitution on the Sb site on the structural and transport properties (5–700 K) of the two solid solutions Cu12Sb4−xAsxS13 and Cu10Co2Sb4−yAsyS13 (0 ≤ x, y ≤ 4). Electronic band structure calculations predict that As has only a weak influence on the valence bands and hence, on the p-type metallic character of Cu12Sb4S13. In agreement with these predictions, all the samples of the series Cu12Sb4−xAsxS13 exhibit p-type metallic behavior with relatively low electrical resistivity and moderate thermopower values that only slightly evolve with the As content. In contrast, the substitution of Co for Cu in As-rich samples seems less favorable as suggested by a decrease in the Co concentration with increasing the As content. This trend leads to a concomitant increase in the electrical resistivity and thermopower leaving the ZT values practically unchanged with respect to purely Cu-based samples. As a result, peak ZT values ranging between 0.60 and 0.75 are achieved at 700 K for both series. The lack of significant variations in the ZT values confirms the robustness of the thermoelectric performances of tetrahedrites with respect to variations in the Sb-to-As ratio.