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dc.contributor.authorLiu, Jian
dc.contributor.authorYe, Gang
dc.contributor.authorPotgieser, Hinderikus G O
dc.contributor.authorKoopmans, Marten
dc.contributor.authorSami, Selim
dc.contributor.authorNugraha, Mohamad Insan
dc.contributor.authorVillalva, Diego Rosas
dc.contributor.authorSun, Hengda
dc.contributor.authorDong, Jingjin
dc.contributor.authorYang, Xuwen
dc.contributor.authorQiu, Xinkai
dc.contributor.authorYao, Chen
dc.contributor.authorPortale, Giuseppe
dc.contributor.authorFabiano, Simone
dc.contributor.authorAnthopoulos, Thomas D.
dc.contributor.authorBaran, Derya
dc.contributor.authorHavenith, Remco W A
dc.contributor.authorChiechi, Ryan C
dc.contributor.authorKoster, L. Jan Anton
dc.date.accessioned2020-12-13T12:18:05Z
dc.date.available2020-12-13T12:18:05Z
dc.date.issued2020-12-11
dc.date.submitted2020-10-02
dc.identifier.citationLiu, J., Ye, G., Potgieser, H. G. O., Koopmans, M., Sami, S., Nugraha, M. I., … Koster, L. J. A. (2020). Amphipathic Side Chain of a Conjugated Polymer Optimizes Dopant Location toward Efficient N-Type Organic Thermoelectrics. Advanced Materials, 2006694. doi:10.1002/adma.202006694
dc.identifier.issn0935-9648
dc.identifier.pmid33306230
dc.identifier.doi10.1002/adma.202006694
dc.identifier.urihttp://hdl.handle.net/10754/666336
dc.description.abstractThere 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$^{-1}$ K$^{-2}$ 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.
dc.description.sponsorshipThis study was supported by a grant from STW/NWO (VIDI 13476). This study is part of the research program of the Foundation of Fundamental Research on Matter (FOM), which is part of the Netherlands Organization for Scientific Research (NWO). This is a publication by the FOM Focus Group “Next Generation Organic Photovoltaics,” participating in the Dutch Institute for Fundamental Energy Research (DIFFER). J.D. acknowledges financial support from the China Scholarship Council. The authors thank the Center for Information Technology of the University of Groningen for their support and for providing access to the Peregrine high performance computing cluster. S.F. acknowledges the support from the Swedish Research Council (2016-03979), Olle Engkvists Stiftelse (204-0256), and the Advanced Functional Materials center at LiU (2009 00971). D.B. acknowledges the support by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-CRG2018-3737. S.S. and R.W.A.H. acknowledges SURFSara for giving access to the Dutch national supercomputer Cartesius. This work was sponsored by NWO Exact and Natural Sciences for the use of supercomputer facilities (2020/ENW/00852342). The authors greatly thank dr. H.P. (Hjalmar) Permentier from Interfaculty Mass Spectrometry Center, University of Groningen for MALDI-TOF measurement.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/10.1002/adma.202006694
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleAmphipathic Side Chain of a Conjugated Polymer Optimizes Dopant Location toward Efficient N-Type Organic Thermoelectrics.
dc.typeArticle
dc.contributor.departmentKing Abdullah University of Science and Technology (KAUST) Physical Science and Engineering Division (PSE) KAUST Solar Center (KSC) Thuwal 23955-6900 Saudi Arabia
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.identifier.journalAdvanced materials (Deerfield Beach, Fla.)
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionZernike Institute for Advanced Materials University of Groningen Nijenborgh 4 Groningen NL-9747 AG the Netherlands
dc.contributor.institutionStratingh Institute for Chemistry University of Groningen Nijenborgh 4 Groningen NL-9747 AG The Netherlands
dc.contributor.institutionLaboratory of Organic Electronics Department of Science and Technology Linköping University Norrköping SE-601 74 Sweden
dc.contributor.institutionDepartment of Inorganic and Physical Chemistry Ghent University Krijgslaan 281-(S3) Ghent B-9000 Belgium
dc.identifier.pages2006694
kaust.personNugraha, Mohamad Insan
kaust.personVillalva, Diego Rosas
kaust.personAnthopoulos, Thomas D.
kaust.personBaran, Derya
kaust.grant.numberOSR-CRG2018-3737
dc.date.accepted2020-11-25
refterms.dateFOA2020-12-13T12:19:51Z
kaust.acknowledged.supportUnitInformation Technology
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)


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This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Except where otherwise noted, this item's license is described as This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.