Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/35244
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dc.contributor.authorConstantinescu, Gabrielpt_PT
dc.contributor.authorGalatanu, Andreipt_PT
dc.contributor.authorTobaldi, Davidpt_PT
dc.contributor.authorMikhalev, Sergeypt_PT
dc.contributor.authorSuarez, Dianapt_PT
dc.contributor.authorPaulino, Tiagopt_PT
dc.contributor.authorZakharchuk, Kirylpt_PT
dc.contributor.authorSergiienko, Sergiipt_PT
dc.contributor.authorLopes, Danielapt_PT
dc.contributor.authorKovalevsky, Andreipt_PT
dc.date.accessioned2022-11-22T10:42:57Z-
dc.date.available2022-11-22T10:42:57Z-
dc.date.issued2022-11-02-
dc.identifier.urihttp://hdl.handle.net/10773/35244-
dc.description.abstractThis work explores the possibility of involving aluminothermy in processing donor-doped zinc oxide-based thermoelectrics by relying on local, strong exothermic effects developed during sintering, with a potential positive impact on the electrical and thermal transport properties. The strategy was exemplified by using aluminium as a dopant, due to its recognized ability to generate additional, available charge carriers in ZnO, and by using two different metallic Al powders and conventional Al2O3 as precursors. Nanosized aluminium powder was involved in order to evaluate the possible desirable effects of the particles size, as compared to aluminium micropowder. A significant enhancement of the electrical and thermoelectric performance of the samples prepared via metallic Al precursors was observed and discussed in terms of the potential impacts provided by the aluminothermic reaction on the microstructure, charge carrier concentration and mobility during sintering. Although the presented results are the first to show evidence of how aluminothermic reactions can be used for boosting the thermoelectric performance of zinc oxide materials, the detailed mechanisms behind the observed enhancements are yet to be understood.pt_PT
dc.language.isoengpt_PT
dc.publisherMDPIpt_PT
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50011%2F2020/PTpt_PT
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50011%2F2020/PTpt_PT
dc.relationLA/P/0006/2020pt_PT
dc.rightsopenAccesspt_PT
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAl-doped ZnOpt_PT
dc.subjectAluminothermypt_PT
dc.subjectCeramics processingpt_PT
dc.subjectTransport propertiespt_PT
dc.subjectThermoelectric performancept_PT
dc.titleEnhancement of thermoelectric performance of donor-doped ZnO ceramics by involving an In situ aluminothermic reaction during processingpt_PT
dc.typearticlept_PT
dc.description.versionpublishedpt_PT
dc.peerreviewedyespt_PT
degois.publication.issue11pt_PT
degois.publication.titleCrystalspt_PT
degois.publication.volume12pt_PT
dc.identifier.doi10.3390/cryst12111562pt_PT
dc.identifier.essn2073-4352pt_PT
dc.identifier.articlenumber1562pt_PT
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