| 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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Sadeghi, Hatef
University of Warwick
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2023Determination of electric and thermoelectric properties of molecular junctions by AFM in peak force tapping modecitations
- 2022Low Thermal Conductivity in Franckeite Heterostructurescitations
- 2022Thermoelectric properties of organic thin films enhanced by π-π stackingcitations
- 2020Radical enhancement of molecular thermoelectric efficiencycitations
- 2019Discriminating Seebeck Sensing of Moleculescitations
- 2019Quantum and Phonon Interference Enhanced Molecular-Scale Thermoelectricitycitations
- 2019Unusual length dependence of the conductance in cumulene molecular wirescitations
- 2019Magic Number Theory of Superconducting Proximity Effects and Wigner Delay Times in Graphene-Like Moleculescitations
- 2018Stable-radicals increase the conductance and Seebeck coefficient of graphene nanoconstrictionscitations
- 2018Toward High Thermoelectric Performance of Thiophene and Ethylenedioxythiophene (EDOT) Molecular Wirescitations
- 2018Connectivity-driven bi-thermoelectricity in heteroatom-substituted molecular junctionscitations
- 2017Tuning the Seebeck coefficient of naphthalenediimide by electrochemical gating and dopingcitations
- 2017High-performance thermoelectricity in edge-over-edge zinc-porphyrin molecular wirescitations
- 2017Thermoelectricity in vertical graphene-C60-graphene architecturescitations
- 2016Theory of electron and phonon transport in nano and molecular quantum devices
- 2016Cross-plane enhanced thermoelectricity and phonon suppression in graphene/MoS2 van der Waals heterostructurescitations
- 2013Classic and quantum capacitances in bernal bilayer and trilayer graphene field effect transistorcitations
Places of action
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article
Radical enhancement of molecular thermoelectric efficiency
Abstract
There is a worldwide race to find materials with high thermoelectric efficiency to convert waste heat to useful energy in consumer electronics and server farms. Here, we propose a radically new method to enhance simultaneously the electrical conductance and thermopower and suppress heat transport through ultra-thin materials formed by single radical molecules. This leads to a significant enhancement of room temperature thermoelectric efficiency. The proposed strategy utilises the formation of transport resonances due to singly occupied spin orbitals in radical molecules. This enhances the electrical conductance by a couple of orders of magnitude in molecular junctions formed by nitroxide radicals compared to the non-radical counterpart. It also increases the Seebeck coefficient to high values of 200 μV K-1. Consequently, the power factor increases by more than two orders of magnitude. In addition, the asymmetry and destructive phonon interference that was induced by the stable organic radical side group significantly decreases the phonon thermal conductance. The enhanced power factor and suppressed thermal conductance in the nitroxide radical lead to the significant enhancement of room temperature ZT to values ca. 0.8. Our result confirms the great potential of stable organic radicals to form ultra-thin film thermoelectric materials with unprecedented thermoelectric efficiency.