Optimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe<sub>2</sub> Synthesized by Arc Melting

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dc.contributor.authorPrado Gonjal, Jesús De La Paz
dc.contributor.authorGarcía-Calvo, Elena
dc.contributor.authorGainza, Javier
dc.contributor.authorDurá, Oscar J.
dc.contributor.authorDejoie, Catherine
dc.contributor.authorNemes, Norbert Marcel
dc.contributor.authorMartínez, José Luis
dc.contributor.authorAlonso, José Antonio
dc.contributor.authorSerrano-Sánchez, Federico
dc.date.accessioned2024-06-13T15:32:25Z
dc.date.available2024-06-13T15:32:25Z
dc.date.issued2024-03-05
dc.description.abstractThermoelectric materials offer a promising avenue for energy management, directly converting heat into electrical energy. Among them, AgSbTe2 has gained significant attention and continues to be a subject of research at further improving its thermoelectric performance and expanding its practical applications. This study focuses on Ag-deficient Ag0.7Sb1.12Te2 and Ag0.7Sb1.12Te1.95Se0.05 materials, examining the impact of compositional engineering within the AgSbTe2 thermoelectric system. These materials have been rapidly synthesized using an arc-melting technique, resulting in the production of dense nanostructured pellets. Detailed analysis through scanning electron microscopy (SEM) reveals the presence of a layered nanostructure, which significantly influences the thermoelectric properties of these materials. Synchrotron X-ray diffraction reveals significant changes in the lattice parameters and atomic displacement parameters (ADPs) that suggest a weakening of bond order in the structure. The thermoelectric characterization highlights the enhanced power factor of Ag-deficient materials that, combined with the low glass-like thermal conductivity, results in a significant improvement in the figure of merit, achieving zT values of 1.25 in Ag0.7Sb1.12Te2 and 1.01 in Ag0.7Sb1.12Te1.95Se0.05 at 750 K.
dc.description.departmentDepto. de Química Inorgánica
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.statuspub
dc.identifier.citationJesús Prado-Gonjal, Elena García-Calvo, Javier Gainza, Oscar J. Durá, Catherine Dejoie, Norbert M. Nemes, José Luis Martínez, José Antonio Alonso, and Federico Serrano-Sánchez ACS Applied Electronic Materials 2024 6 (5), 2969-2977 DOI: 10.1021/acsaelm.3c01653
dc.identifier.doi10.1021/acsaelm.3c01653
dc.identifier.issn2637-6113
dc.identifier.issn2637-6113
dc.identifier.officialurlhttps://doi.org/10.1021/acsaelm.3c01653
dc.identifier.urihttps://hdl.handle.net/20.500.14352/104910
dc.journal.titleACS Applied Electronic Materials
dc.language.isoeng
dc.page.final2977
dc.page.initial2969
dc.publisherACS
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject.cdu54
dc.subject.keywordthermeoelectrics
dc.subject.keywordAgSbTe2
dc.subject.keywordarc-melting
dc.subject.keywordcompositional engineering
dc.subject.ucmQuímica
dc.subject.ucmFísica (Física)
dc.subject.ucmFísica del estado sólido
dc.subject.ucmCristalografía (Química)
dc.subject.unesco23 Química
dc.subject.unesco2210.28 Química del Estado Sólido
dc.subject.unesco2207.09 Conversión de Energía
dc.subject.unesco2211.04 Cristalografía
dc.titleOptimizing Thermoelectric Properties through Compositional Engineering in Ag-Deficient AgSbTe<sub>2</sub> Synthesized by Arc Melting
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number6
dspace.entity.typePublication
relation.isAuthorOfPublication7a2b8d3d-7159-48e6-a318-76923a9867ed
relation.isAuthorOfPublication697f3953-540b-435a-afc9-ec307315d667
relation.isAuthorOfPublication.latestForDiscovery7a2b8d3d-7159-48e6-a318-76923a9867ed
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