Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedure

Sb-doped Bi2Te3 is known since the 1950s as the best thermoelectric material for near-room temperature operation. Improvements in material performance are expected from nanostructuring procedures. We present a straightforward and fast method to synthesize already nanostructured pellets that show an...

ver descrição completa

Detalhes bibliográficos
Autores: Serrano Sánchez, Federico, Gharsallah, Mouna, Nemes, Norbert Marcel, Biskup Zaja, Nevenko, Varela Del Arco, María, Martínez, José Luis, Fernández Díaz, María Teresa, Alonso, José Antonio
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/91844
Acesso em linha:https://hdl.handle.net/20.500.14352/91844
Access Level:acceso abierto
Palavra-chave:536
Termodinámica
2213 Termodinámica
id ES_f4e47cd7d8ffa0227ce3f088342f0d7e
oai_identifier_str oai:docta.ucm.es:20.500.14352/91844
network_acronym_str ES
network_name_str España
repository_id_str
spelling Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedureSerrano Sánchez, FedericoGharsallah, MounaNemes, Norbert MarcelBiskup Zaja, NevenkoVarela Del Arco, MaríaMartínez, José LuisFernández Díaz, María TeresaAlonso, José Antonio536Termodinámica2213 TermodinámicaSb-doped Bi2Te3 is known since the 1950s as the best thermoelectric material for near-room temperature operation. Improvements in material performance are expected from nanostructuring procedures. We present a straightforward and fast method to synthesize already nanostructured pellets that show an enhanced ZT due to a remarkably low thermal conductivity and unusually high Seebeck coefficient for a nominal composition optimized for arc-melting: Bi0.35Sb1.65Te3. We provide a detailed structural analysis of the Bi2−xSbxTe3 series (0 ≤ x ≤ 2) based on neutron powder diffraction as a function of composition and temperature that reveals the important role played by atomic vibrations. Arc-melting produces layered platelets with less than 50 nm-thick sheets. The low thermal conductivity is attributed to the phonon scattering at the grain boundaries of the nanosheets. This is a fast and cost-effective production method of highly efficient thermoelectric materials.Nature ResearchUniversidad Complutense de Madrid20172017-01-0120172017-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/91844reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available MAT2013–41099-RMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available MAT2015-66888-C3-3-R MAGNETISMO EN LA NANOESCALA: EXPLORANDO NUEVAS RUTAS (CRECIMIENTO Y CARACTERIZACION)open accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/918442026-06-02T12:44:21Z
dc.title.none.fl_str_mv Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedure
title Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedure
spellingShingle Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedure
Serrano Sánchez, Federico
536
Termodinámica
2213 Termodinámica
title_short Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedure
title_full Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedure
title_fullStr Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedure
title_full_unstemmed Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedure
title_sort Enhanced figure of merit in nanostructured (Bi,Sb)2Te3 with optimized composition, prepared by a straightforward arc-melting procedure
dc.creator.none.fl_str_mv Serrano Sánchez, Federico
Gharsallah, Mouna
Nemes, Norbert Marcel
Biskup Zaja, Nevenko
Varela Del Arco, María
Martínez, José Luis
Fernández Díaz, María Teresa
Alonso, José Antonio
author Serrano Sánchez, Federico
author_facet Serrano Sánchez, Federico
Gharsallah, Mouna
Nemes, Norbert Marcel
Biskup Zaja, Nevenko
Varela Del Arco, María
Martínez, José Luis
Fernández Díaz, María Teresa
Alonso, José Antonio
author_role author
author2 Gharsallah, Mouna
Nemes, Norbert Marcel
Biskup Zaja, Nevenko
Varela Del Arco, María
Martínez, José Luis
Fernández Díaz, María Teresa
Alonso, José Antonio
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 536
Termodinámica
2213 Termodinámica
topic 536
Termodinámica
2213 Termodinámica
description Sb-doped Bi2Te3 is known since the 1950s as the best thermoelectric material for near-room temperature operation. Improvements in material performance are expected from nanostructuring procedures. We present a straightforward and fast method to synthesize already nanostructured pellets that show an enhanced ZT due to a remarkably low thermal conductivity and unusually high Seebeck coefficient for a nominal composition optimized for arc-melting: Bi0.35Sb1.65Te3. We provide a detailed structural analysis of the Bi2−xSbxTe3 series (0 ≤ x ≤ 2) based on neutron powder diffraction as a function of composition and temperature that reveals the important role played by atomic vibrations. Arc-melting produces layered platelets with less than 50 nm-thick sheets. The low thermal conductivity is attributed to the phonon scattering at the grain boundaries of the nanosheets. This is a fast and cost-effective production method of highly efficient thermoelectric materials.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-01-01
2017
2017-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/91844
url https://hdl.handle.net/20.500.14352/91844
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available MAT2013–41099-R
Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available MAT2015-66888-C3-3-R MAGNETISMO EN LA NANOESCALA: EXPLORANDO NUEVAS RUTAS (CRECIMIENTO Y CARACTERIZACION)
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Nature Research
publisher.none.fl_str_mv Nature Research
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869424513003814912
score 15,300724

Registos relacionados