Logotipo ImpactU
Autor

Crystallographically textured SnSe nanomaterials produced from the liquid phase sintering of nanocrystals

Acceso Cerrado
ID Minciencias: ART-0000512630-83
Ranking: ART-GC_ART

Abstract:

We report the thermoelectric performance of p-type nanocrystalline SnSe obtained from the liquid phase sintering of blends of SnSe nanocrystals and Te nanorods. A cycled hot press procedure at a temperature above the Te melting point promoted the formation of crystallographically textured SnSe nanomaterials with relative densities up to 93%. After consolidation, part of this Te was found within the SnSe lattice and part remained as elemental Te between the SnSe grains. The presence of Te during the SnSe consolidation resulted in SnSe nanomaterials with higher electrical conductivities and lower Seebeck coefficients and thermal conductivities. By adjusting the amount of Te, thermoelectric figures of merit (ZT) up to 1.4 at 790 K were measured in the direction of the uniaxial pressure, coinciding with the preferential a crystallographic axis. While this value matches the highest ZT value reported at this temperature for SnSe in the [100] crystal direction, the ZT values of the consolidated SnSe along the bc plane were relatively lower due to moderately low thermal conductivities in this plane.

Tópico:

Chalcogenide Semiconductor Thin Films

Citaciones:

Citations: 20
20

Citaciones por año:

Altmétricas:

Paperbuzz Score: 0
0

Información de la Fuente:

SCImago Journal & Country Rank
FuenteDalton Transactions
Cuartil año de publicaciónNo disponible
Volumen48
Issue11
Páginas3641 - 3647
pISSNNo disponible
ISSN1477-9234

Enlaces e Identificadores:

Publicaciones editoriales no especializadas