Issue 15, 2018

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

Abstract

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. SnS0.1Se0.9 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.

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

Supplementary files

Article information

Article type
Edge Article
Submitted
06 dec 2017
Accepted
23 mar 2018
First published
23 mar 2018
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2018,9, 3828-3836

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

G. Han, S. R. Popuri, H. F. Greer, R. Zhang, L. Ferre-Llin, J. G. Bos, W. Zhou, M. J. Reece, D. J. Paul, A. R. Knox and D. H. Gregory, Chem. Sci., 2018, 9, 3828 DOI: 10.1039/C7SC05190E

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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