Topotactic anion-exchange in thermoelectric nanostructured layered tin chalcogenides with reduced selenium content

Anion exchange has been performed with nanoplates of tin sulfide (SnS) via “soft chemical” organic-free solution syntheses to yield layered pseudo-ternary tin chalcogenides on a 10 g-scale. SnS undergoes a topotactic transformation to form a series of S-substituted tin selenide (SnSe) nano/micro-pla...

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Detalles Bibliográficos
Autores principales: Han, Guang, Popuri, Srinivas R., Greer, Heather F., Zhang, Ruizhi, Ferre-Llin, Lourdes, Bos, Jan-Willem G., Zhou, Wuzong, Reece, Michael J., Paul, Douglas J., Knox, Andrew R., Gregory, Duncan H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2018
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5939836/
https://www.ncbi.nlm.nih.gov/pubmed/29780515
http://dx.doi.org/10.1039/c7sc05190e
Descripción
Sumario:Anion exchange has been performed with nanoplates of tin sulfide (SnS) via “soft chemical” organic-free solution syntheses to yield layered pseudo-ternary tin chalcogenides on a 10 g-scale. SnS undergoes a topotactic transformation to form a series of S-substituted tin selenide (SnSe) nano/micro-plates with tuneable chalcogenide composition. SnS(0.1)Se(0.9) nanoplates were spark plasma sintered into phase-pure, textured, dense pellets, the ZT of which has been significantly enhanced to ≈1.16 from ≈0.74 at 923 K via microstructure texturing control. These approaches provide versatile, scalable and low-cost routes to p-type layered tin chalcogenides with controllable composition and competitive thermoelectric performance.

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