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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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Lambert, Colin John
Lancaster University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2023Determination of electric and thermoelectric properties of molecular junctions by AFM in peak force tapping modecitations
- 2023High Seebeck coefficient from isolated oligo-phenyl arrays on single layered graphene <i>via</i> stepwise assemblycitations
- 2022Thermoelectric properties of organic thin films enhanced by π-π stackingcitations
- 2021Optimised power harvesting by controlling the pressure applied to molecular junctionscitations
- 20212D bio-based nanomaterial as a green route to amplify the formation of hydrate phases of cement composites
- 2020Scale-Up of Room-Temperature Constructive Quantum Interference from Single Molecules to Self-Assembled Molecular-Electronic Filmscitations
- 2020Tuning the thermoelectrical properties of anthracene-based self-assembled monolayerscitations
- 2020Molecular-scale thermoelectricity: As simple as 'ABC'citations
- 2019Charge transfer complexation boosts molecular conductance through Fermi level pinningcitations
- 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
- 2018Strain-induced bi-thermoelectricity in tapered carbon nanotubescitations
- 2018Thermoelectric Properties of 2,7-Dipyridylfluorene Derivatives in Single-Molecule 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
- 2016Identification of a positive-Seebeck-coefficient exohedral fullerenecitations
- 2016Quasiparticle and excitonic gaps of one-dimensional carbon chainscitations
- 2016Cross-plane enhanced thermoelectricity and phonon suppression in graphene/MoS2 van der Waals heterostructurescitations
- 2009Anisotropic magnetoresistance in atomic chains of iridium and platinum from first principlescitations
- 2007Electronic properties of alkali- and alkaline-earth-intercalated silicon nanowires.citations
- 2006Tuning the electrical conductivity of nanotube-encapsulated metallocene wires.citations
- 2006Strongly correlated electron physics in nanotube-encapsulated metallocene chains.citations
- 2006Electronic properties of metallocene wirescitations
- 2006Spin and molecular electronics in atomically-generated orbital landscapes.citations
- 2005Point-contact Andreev reflection in ferromagnet/superconductor ballistic nanojunctionscitations
- 2004First principles simulation of the magnetic and structural properties of iron.citations
- 2000Thermopower in mesoscopic normal-superconducting structures.citations
Places of action
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article
Cross-plane enhanced thermoelectricity and phonon suppression in graphene/MoS2 van der Waals heterostructures
Abstract
The thermoelectric figures of merit of pristine two-dimensional materials are predicted to be significantly less than unity, making them uncompetitive as thermoelectric materials. Here we elucidate a new strategy that overcomes this limitation by creating multi-layer nanoribbons of two different materials and allowing thermal and electrical currents to flow perpendicular to their planes. To demonstrate this enhancement of thermoelectric efficiency ZT, we analyse the thermoelectric performance of monolayer molybdenum disulphide (MoS2) sandwiched between two graphene monolayers and demonstrate that the cross-plane (CP) ZT is significantly enhanced compared with the pristine parent materials. For the parent monolayer of MoS2, we find that ZT can be as high as approximately 0.3, whereas monolayer graphene has a negligibly small ZT. In contrast for the graphene/MoS2/graphene heterostructure, we find that the CP ZT can be as large as 2.8. One contribution to this enhancement is a reduction of the thermal conductance of the van der Waals heterostructure compared with the parent materials, caused by a combination of boundary scattering at the MoS2/graphene interface which suppresses the phonons transmission and the lower Debye frequency of monolayer MoS2, which filters phonons from the monolayer graphene. A second contribution is an increase in the electrical conductance and Seebeck coefficient associated with molybdenum atoms at the edges of the nanoribbons.