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dc.contributor.authorIbañez, Maria
dc.contributor.authorZhishan, Luo
dc.contributor.authorAziz, Genc
dc.contributor.authorPiveteau, Laura
dc.contributor.authorOrtega, Silvia
dc.contributor.authorCadavid, Doris
dc.contributor.authorDobrozhan, Oleksandr
dc.contributor.authorYu, Liu
dc.contributor.authorNachtegaal, Maarten
dc.contributor.authorZebarjadi, Mona
dc.contributor.authorArbio, Jordi
dc.contributor.authorKovalenko, Maksym V.
dc.contributor.authorCabot, Andreu
dc.contributor.otherInstitut de Recerca en Energía de Catalunya
dc.identifier.citationIbañez, M. [et al.]. High-performance thermoelectric nanocomposites from nanocrystal building blocks. "Nature Communications", 7 Març 2016, vol. 7, núm. 10766.
dc.description.abstracthe efficient conversion between thermal and electrical energy by means of durable, silent and scalable solid-state thermoelectric devices has been a long standing goal. While nanocrystalline materials have already led to substantially higher thermoelectric efficiencies, further improvements are expected to arise from precise chemical engineering of nanoscale building blocks and interfaces. Here we present a simple and versatile bottom-up strategy based on the assembly of colloidal nanocrystals to produce consolidated yet nanostructured thermoelectric materials. In the case study on the PbS-Ag system, Ag nanodomains not only contribute to block phonon propagation, but also provide electrons to the PbS host semiconductor and reduce the PbS intergrain energy barriers for charge transport. Thus, PbS-Ag nanocomposites exhibit reduced thermal conductivities and higher charge carrier concentrations and mobilities than PbS nanomaterial. Such improvements of the material transport properties provide thermoelectric figures of merit up to 1.7 at 850 K.
dc.publisherNature Publishing Group
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials
dc.subject.othernanocrystal; chemical engineering; chemical structure; colloid; concentration (parameters); electron; phonon; semiconductor; thermal conductivity
dc.titleHigh-performance thermoelectric nanocomposites from nanocrystal building blocks
dc.title.alternativeHigh-performance thermoelectric nanocomposites from nanocrystal building blocks
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7/310250/EU/Ultra-versatile Nanoparticle Integration into Organized Nanoclusters/UNION
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7/306733/EU/Chemically Engineered Nanocrystal Solids/NANOSOLID
upcommons.citation.publicationNameNature Communications
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