| 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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Newbrook, Daniel W.
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2022Screen-printed bismuth telluride nanostructured composites for flexible thermoelectric applicationscitations
- 2022Development of thin-film chalcogenide materials deposited by LPCVD for thermoelectric energy generation
- 2021Low temperature CVD of thermoelectric SnTe thin films from the single source precursor, [nBu3Sn(TenBu)]citations
- 2021Low temperature CVD of thermoelectric SnTe thin films from the single source precursor, [nBu3Sn(TenBu)]citations
- 2020Thermoelectric properties of bismuth telluride thin films electrodeposited from a non-aqueous solutioncitations
- 2020Selective chemical vapor deposition approach for Sb2Te3 thin film micro-thermoelectric generatorscitations
- 2020Improved thermoelectric performance of Bi2Se3 alloyed Bi2Te3 thin films via low pressure chemical vapour depositioncitations
- 2020Improved thermoelectric performance of Bi 2 Se 3 alloyed Bi 2 Te 3 thin films via low pressure chemical vapour depositioncitations
Places of action
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article
Thermoelectric properties of bismuth telluride thin films electrodeposited from a non-aqueous solution
Abstract
We report the thermoelectric properties of Bi<sub>2</sub>Te<sub>3</sub> thin films electrodeposited from the weakly coordinating solvent dichloromethane (CH<sub>2</sub>Cl<sub>2</sub>). It was found that the oxidation of porous films is significant, causing the degradation of its thermoelectric properties. We show that the morphology of the film can be improved drastically by applying a short initial nucleation pulse, which generates a large number of nuclei, and then growing the nuclei by pulsed electrodeposition at a much lower overpotential. This significantly reduces the oxidation of the films as smooth films have a smaller surface-to-volume ratio and are less prone to oxidation. X-ray photoelectron spectroscopy (XPS) shows that those films with Te(O) termination show a complete absence of oxygen below the surface layer. A thin film transfer process was developed using polystyrene as a carrier polymer to transfer the films from the conductive TiN to an insulating layer for thermoelectrical characterization. Temperature-dependent Seebeck measurements revealed a room-temperature coefficient of −51.7 μV/K growing to nearly −100 μV/K at 520 °C. The corresponding power factor reaches a value of 88.2 μW/mK<sup>2</sup> at that temperature.