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Core-Shell Nanoparticles As Building Blocks for the Bottom-Up Production of Functional Nanocomposites: PbTe-PbS Thermoelectric Properties

hal.structure.identifierDepartament Electronica
dc.contributor.authorIBÁÑEZ, Maria
hal.structure.identifierInstitut de Ciència de Materials de Barcelona [ICMAB]
hal.structure.identifierCatalonia Institute for Energy Research [IREC]
dc.contributor.authorZAMANI, Reza
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGORSSE, Stéphane
hal.structure.identifierCatalonia Institute for Energy Research [IREC]
dc.contributor.authorFAN, Jiandong
hal.structure.identifierDepartament Electronica
dc.contributor.authorORTEGA, Silvia
hal.structure.identifierCatalonia Institute for Energy Research [IREC]
dc.contributor.authorCADAVID, Doris
hal.structure.identifierDepartament Electronica
hal.structure.identifierCatalonia Institute for Energy Research [IREC]
dc.contributor.authorMORANTE, Joan Ramon
hal.structure.identifierInstitut de Ciència de Materials de Barcelona [ICMAB]
hal.structure.identifierInstitució Catalana de Recerca i Estudis Avançats = Catalan Institution for Research and Advanced Studies [ICREA]
dc.contributor.authorARBIOL, Jordi
hal.structure.identifierDepartament Electronica
hal.structure.identifierCatalonia Institute for Energy Research [IREC]
dc.contributor.authorCABOT, Andreu
dc.date.issued2013
dc.identifier.issn1936-0851
dc.description.abstractEnThe bottom-up assembly of nanocrystals provides access to a three-dimensional composition control at the nanoscale not attainable by any other technology. In particular, colloidal nanoheterostructures, with intrinsic multiphase organization, are especially appealing building blocks for the bottom-up production of nanocomposites. In the present work, we use PbTe-PbS as the model material system and thermoelectricity as the paradigmatic application to investigate the potential of the bottom-up assembly of core-shell nanoparticles to produce functional nanocomposites. With this goal in mind, a rapid, high-yield and scalable colloidal synthetic route to prepare grams of PbTe@PbS core-shell nanoparticles with unprecedented narrow size distributions and exceptional composition control is detailed. PbTe@PbS nanoparticles were used as building blocks for the bottom-up production of PbTe-PbS nanocomposites with tuned composition. In such PbTe-PbS nanocomposites, synergistic nanocrystal doping effects result in up to 10-fold higher electrical conductivities than in pure PbTe and PbS nanomaterials. At the same time, the acoustic impedance mismatch between PbTe and PbS phases and a partial phase alloying provide PbTe-PbS nanocomposites with strongly reduced thermal conductivities. As a result, record thermoelectric figures of merit (ZT) of ∼1.1 were obtained from undoped PbTe and PbS phases at 710 K. These high ZT values prove the potential of the proposed processes to produce efficient functional nanomaterials with programmable properties.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enNanoparticles
dc.subject.enInorganic compounds
dc.subject.enThermoelectric properties
dc.subject.enCore-shell
dc.title.enCore-Shell Nanoparticles As Building Blocks for the Bottom-Up Production of Functional Nanocomposites: PbTe-PbS Thermoelectric Properties
dc.typeArticle de revue
dc.identifier.doi10.1021/nn305971v
dc.subject.halChimie/Matériaux
bordeaux.journalACS Nano
bordeaux.page2573-2586
bordeaux.volume7
bordeaux.issue3
bordeaux.peerReviewedoui
hal.identifierhal-00819021
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00819021v1
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