dc.contributor.author | Zapata Arteaga, Osnat | |
dc.contributor.author | Perevedentsev, Aleksandr | |
dc.contributor.author | Marina Barbier, Sara Luisa | |
dc.contributor.author | Martín Pérez, Jaime | |
dc.contributor.author | Sebastián Reparaz, Juan | |
dc.contributor.author | Campoy Quiles, Mariano | |
dc.date.accessioned | 2021-03-01T13:06:21Z | |
dc.date.available | 2021-03-01T13:06:21Z | |
dc.date.issued | 2020-09-11 | |
dc.identifier.citation | ACS Energy Letters 5(9) : 2972-2978 (2020) | es_ES |
dc.identifier.issn | 2380-8195 | |
dc.identifier.uri | http://hdl.handle.net/10810/50392 | |
dc.description.abstract | 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. | es_ES |
dc.description.sponsorship | 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). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Chemical Society | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/PGC2018-095411-B-I00 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/MAT2017-90024-P | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/648901 | es_ES |
dc.relation | info:eu-repo/grantAgreement/MICINN/PGC2018-094620-A-I00 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | thermoelectric properties | es_ES |
dc.subject | organic thermoelectrics | es_ES |
dc.subject | transport | es_ES |
dc.subject | films | es_ES |
dc.title | Reduction of the Lattice Thermal Conductivity of Polymer Semiconductors by Molecular Doping | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License | es_ES |
dc.rights.holder | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.relation.publisherversion | https://pubmed.ncbi.nlm.nih.gov/32953988/ | es_ES |
dc.identifier.doi | 10.1021/acsenergylett.0c01410 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Ciencia y tecnología de polímeros | es_ES |
dc.departamentoeu | Polimeroen zientzia eta teknologia | es_ES |