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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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Havenith, Remco W. A.
University of Groningen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Lattice Dynamics and Thermoelectric Properties of 2D LiAlTe 2 , LiGaTe 2 , and LiInTe 2 Monolayerscitations
- 2024Lattice Dynamics and Thermoelectric Properties of 2D LiAlTe2, LiGaTe2, and LiInTe2 Monolayerscitations
- 2023Spark Discharge Doping—Achieving Unprecedented Control over Aggregate Fraction and Backbone Ordering in Poly(3‐hexylthiophene) Solutionscitations
- 2022Strategies for Enhancing the Dielectric Constant of Organic Materialscitations
- 2022Strategies for Enhancing the Dielectric Constant of Organic Materialscitations
- 2021Amphipathic Side Chain of a Conjugated Polymer Optimizes Dopant Location toward Efficient N-Type Organic Thermoelectricscitations
- 2021Amphipathic Side Chain of a Conjugated Polymer Optimizes Dopant Location toward Efficient N-Type Organic Thermoelectricscitations
- 2020N-type organic thermoelectrics:demonstration of ZT > 0.3citations
- 2020How Ethylene Glycol Chains Enhance the Dielectric Constant of Organic Semiconductors:Molecular Origin and Frequency Dependencecitations
- 2020How Ethylene Glycol Chains Enhance the Dielectric Constant of Organic Semiconductorscitations
- 2020N-type organic thermoelectricscitations
- 2019Coverage-Controlled Polymorphism of H-Bonded Networks on Au(111)citations
- 2015Strategy for Enhancing the Dielectric Constant of Organic Semiconductors Without Sacrificing Charge Carrier Mobility and Solubilitycitations
- 2015Strategy for Enhancing the Dielectric Constant of Organic Semiconductors Without Sacrificing Charge Carrier Mobility and Solubility
- 2014Strategy for Enhancing the Electric Permittivity of Organic Semiconductors
- 2014Stabilizing cations in the backbones of conjugated polymerscitations
- 2014Stabilizing cations in the backbones of conjugated polymerscitations
- 2013Molecular flexibility and structural instabilities in crystalline L-methioninecitations
- 2007On the structure of cross-conjugated 2,3-diphenylbutadienecitations
- 2002Ring current and electron delocalisation in an all-metal cluster, Al42-citations
- 2000Infinite, undulating chains of intermolecularly hydrogen bonded (E,E)-2,2-dimethylcyclohexane-1,3-dione dioximes in the solid state. A single crystal X-ray, charge density distribution and spectroscopic studycitations
- 2000Infinite, undulating chains of intermolecularly hydrogen bonded (E,E)-2,2-dimethylcyclohexane-1,3-dione dioximes in the solid state. A single crystal X-ray, charge density distribution and spectroscopic studycitations
Places of action
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article
Amphipathic Side Chain of a Conjugated Polymer Optimizes Dopant Location toward Efficient N-Type Organic Thermoelectrics
Abstract
<p>There is no molecular strategy for selectively increasing the Seebeck coefficient without reducing the electrical conductivity for organic thermoelectrics. Here, it is reported that the use of amphipathic side chains in an n-type donor–acceptor copolymer can selectively increase the Seebeck coefficient and thus increase the power factor by a factor of ≈5. The amphipathic side chain contains an alkyl chain segment as a spacer between the polymer backbone and an ethylene glycol type chain segment. The use of this alkyl spacer does not only reduce the energetic disorder in the conjugated polymer film but can also properly control the dopant sites away from the backbone, which minimizes the adverse influence of counterions. As confirmed by kinetic Monte Carlo simulations with the host–dopant distance as the only variable, a reduced Coulombic interaction resulting from a larger host–dopant distance contributes to a higher Seebeck coefficient for a given electrical conductivity. Finally, an optimized power factor of 18 µW m<sup>–1</sup> K<sup>–2</sup> is achieved in the doped polymer film. This work provides a facile molecular strategy for selectively improving the Seebeck coefficient and opens up a new route for optimizing the dopant location toward realizing better n-type polymeric thermoelectrics.</p>