dc.contributor.author |
Liu, Yu |
dc.contributor.author |
Zhang, Yu |
dc.contributor.author |
Ortega, Silvia |
dc.contributor.author |
Ibáñez, Maria |
dc.contributor.author |
Lim, Khak Ho |
dc.contributor.author |
Grau Carbonell, Albert |
dc.contributor.author |
Martí-Sánchez, Sara |
dc.contributor.author |
Ng, Ka Ming |
dc.contributor.author |
Arbiol i Cobos, Jordi |
dc.contributor.author |
Kovalenko, Maksym V. |
dc.contributor.author |
Cadavid, Doris |
dc.contributor.author |
Cabot, Andreu |
dc.date |
2018 |
dc.identifier |
https://ddd.uab.cat/record/215012 |
dc.identifier |
urn:10.1021/acs.nanolett.8b00263 |
dc.identifier |
urn:oai:ddd.uab.cat:215012 |
dc.identifier |
urn:scopus_id:85045029418 |
dc.identifier |
urn:articleid:15306992v18n4p2557 |
dc.identifier |
urn:wos_id:000430155900051 |
dc.identifier |
urn:altmetric_id:34478409 |
dc.identifier |
urn:icn2uab:6030670 |
dc.description.abstract |
Bottom-up approaches for producing bulk nanomaterials have traditionally lacked control over the crystallographic alignment of nanograins. This limitation has prevented nanocrystal-based nanomaterials from achieving optimized performances in numerous applications. Here we demonstrate the production of nanostructured BixSb₂-xTe₃ alloys with controlled stoichiometry and crystallographic texture through proper selection of the starting building blocks and the adjustment of the nanocrystal-to-nanomaterial consolidation process. In particular, we hot pressed disk-shaped BixSb₂-xTe₃ nanocrystals and tellurium nanowires using multiple pressure and release steps at a temperature above the tellurium melting point. We explain the formation of the textured nanomaterials though a solution-reprecipitation mechanism under a uniaxial pressure. Additionally, we further demonstrate these alloys to reach unprecedented thermoelectric figures of merit, up to ZT = 1.96 at 420 K, with an average value of ZT = 1.77 for the record material in the temperature range 320-500 K, thus potentially allowing up to 60% higher energy conversion efficiencies than commercial materials. |
dc.format |
application/pdf |
dc.language |
eng |
dc.publisher |
|
dc.relation |
European Commission 306733 |
dc.relation |
Ministerio de Economía y Competitividad SEV-2013-0295 |
dc.relation |
Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1638 |
dc.relation |
Nano letters ; Vol. 18, issue 4 (April 2018), p. 2557-2563 |
dc.rights |
open access |
dc.rights |
Tots els drets reservats. |
dc.rights |
https://rightsstatements.org/vocab/InC/1.0/ |
dc.subject |
Bulk nano-materials |
dc.subject |
Commercial materials |
dc.subject |
Consolidation process |
dc.subject |
Controlled stoichiometry |
dc.subject |
Crystallographic textures |
dc.subject |
Optimized performance |
dc.subject |
Tellurium nanowires |
dc.subject |
Uniaxial pressures |
dc.title |
Crystallographically textured nanomaterials produced from the liquid phase sintering of BixSb₂-xTe₃ nanocrystal building blocks |
dc.type |
Article |