Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping

Here we show that molecular doping of polymer thermoelectrics increases the electrical conductivity while reducing the thermal conductivity. A high-throughput methodology based on annealing and doping gradients within individual films is employed to self-consistently analyze and correlate electrical...

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Autores: Zapata Arteaga, Osnat, Perevedentsev, Aleksandr, Marina Barbier, Sara Luisa, Martín Pérez, Jaime, Sebastián Reparaz, Juan, Campoy Quiles, Mariano
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/50392
Acceso en línea:http://hdl.handle.net/10810/50392
Access Level:acceso abierto
Palabra clave:thermoelectric properties
organic thermoelectrics
transport
films
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spelling Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular DopingZapata Arteaga, OsnatPerevedentsev, AleksandrMarina Barbier, Sara LuisaMartín Pérez, JaimeSebastián Reparaz, JuanCampoy Quiles, Marianothermoelectric propertiesorganic thermoelectricstransportfilmsHere we show that molecular doping of polymer thermoelectrics increases the electrical conductivity while reducing the thermal conductivity. A high-throughput methodology based on annealing and doping gradients within individual films is employed to self-consistently analyze and correlate electrical and thermal characteristics for the equivalent of >100 samples. We focus on the benchmark material system poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-b]thiophene) (PBTTT) doped with molecular acceptor 2,3,5,6-tetrafittoro-7,7,8,8-tetra-cyanoquinodimethane (F4TCNQ). The thermal conductivity of neat PBTTT films is dominated by the degree of crystallinity, with thermal percolation observed for annealing temperatures >170 degrees C. Upon doping the samples with a relatively low amount of F4TCNQ (anion content <1 mol %), the thermal conductivity exhibits a two-fold reduction without compromising the crystalline quality, which resembles the effect of alloy scattering observed in several inorganic systems. The analysis of the relation between thermal and electrical conductivities shows that thermal transport is dominated by a doping-induced reduced lattice contribution.We acknowledge financial support from the Spanish Ministry of Science and Innovation through projects PGC2018-095411-B-I00 and MAT2017-90024-P (TANGENTS)-EI/FEDER, UE projects; the Generalitat de Catalunya through grants 2017SGR488 and AGAUR 2018 PROD 00191; and from the European Research Council (ERC) under grant agreement no. 648901. O.Z.-A. acknowledges CONACYT-SENER for his Ph.D. scholarship (no. 472571). J.M. thanks MCIU for the Ramo ' n y Cajal contract and grant PGC2018-094620-A-I00. We thank Dr. Agusti ' n Mihi for the access to and support with the FTIR equipment. We acknowledge the technical and human support provided by SGIker of UPV/EHU and European funding (ERDF and ESF). We thank Andre ' s Gom ' ez Rodrig ' uez from the Scanning Probe Microscopy Laboratory (ICMAB-CSIC) for a set of AFM measurements. We acknowledge support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI).American Chemical SocietyEuropean Commission202120212020info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/50392reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICINN/PGC2018-095411-B-I00/info:eu-repo/grantAgreement/MICINN/MAT2017-90024-P/info:eu-repo/grantAgreement/EC/H2020/648901info:eu-repo/grantAgreement/MICINN/PGC2018-094620-A-I00/https://pubmed.ncbi.nlm.nih.gov/32953988/info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/es/This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution LicenseAtribución-NoComercial-SinDerivadas 3.0 Españaoai:addi.ehu.eus:10810/503922026-06-18T09:23:17Z
dc.title.none.fl_str_mv Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping
title Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping
spellingShingle Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping
Zapata Arteaga, Osnat
thermoelectric properties
organic thermoelectrics
transport
films
title_short Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping
title_full Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping
title_fullStr Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping
title_full_unstemmed Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping
title_sort Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping
dc.creator.none.fl_str_mv Zapata Arteaga, Osnat
Perevedentsev, Aleksandr
Marina Barbier, Sara Luisa
Martín Pérez, Jaime
Sebastián Reparaz, Juan
Campoy Quiles, Mariano
author Zapata Arteaga, Osnat
author_facet Zapata Arteaga, Osnat
Perevedentsev, Aleksandr
Marina Barbier, Sara Luisa
Martín Pérez, Jaime
Sebastián Reparaz, Juan
Campoy Quiles, Mariano
author_role author
author2 Perevedentsev, Aleksandr
Marina Barbier, Sara Luisa
Martín Pérez, Jaime
Sebastián Reparaz, Juan
Campoy Quiles, Mariano
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
dc.subject.none.fl_str_mv thermoelectric properties
organic thermoelectrics
transport
films
topic thermoelectric properties
organic thermoelectrics
transport
films
description Here we show that molecular doping of polymer thermoelectrics increases the electrical conductivity while reducing the thermal conductivity. A high-throughput methodology based on annealing and doping gradients within individual films is employed to self-consistently analyze and correlate electrical and thermal characteristics for the equivalent of >100 samples. We focus on the benchmark material system poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-b]thiophene) (PBTTT) doped with molecular acceptor 2,3,5,6-tetrafittoro-7,7,8,8-tetra-cyanoquinodimethane (F4TCNQ). The thermal conductivity of neat PBTTT films is dominated by the degree of crystallinity, with thermal percolation observed for annealing temperatures >170 degrees C. Upon doping the samples with a relatively low amount of F4TCNQ (anion content <1 mol %), the thermal conductivity exhibits a two-fold reduction without compromising the crystalline quality, which resembles the effect of alloy scattering observed in several inorganic systems. The analysis of the relation between thermal and electrical conductivities shows that thermal transport is dominated by a doping-induced reduced lattice contribution.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/50392
url http://hdl.handle.net/10810/50392
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN/PGC2018-095411-B-I00/
info:eu-repo/grantAgreement/MICINN/MAT2017-90024-P/
info:eu-repo/grantAgreement/EC/H2020/648901
info:eu-repo/grantAgreement/MICINN/PGC2018-094620-A-I00/
https://pubmed.ncbi.nlm.nih.gov/32953988/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Atribución-NoComercial-SinDerivadas 3.0 España
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Atribución-NoComercial-SinDerivadas 3.0 España
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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