Facile surfactant-free synthesis of p-Type SnSe nanoplates with exceptional thermoelectric power factors

Han, Guang, Popuri, Srinivas R., Greer, Heather F., Bos, Jan-Willem G., Zhou, Wuzong, Knox, Andrew R., Montecucco, Andrea, Siviter, Jonathan, Man, Elena A., Macauley, Martin, Paul, Douglas J., Li, Wen-guang, Paul, Manosh C., Gao, Min ORCID: https://orcid.org/0000-0001-9591-5825, Sweet, Tracy ORCID: https://orcid.org/0000-0002-6947-5018, Freer, Robert, Azough, Feridoon, Baig, Hasan, Sellami, Nazmi, Mallick, Tapas K. and Gregory, Duncan H. 2016. Facile surfactant-free synthesis of p-Type SnSe nanoplates with exceptional thermoelectric power factors. Angewandte Chemie - International Edition 55 (22) , pp. 6433-6437. 10.1002/anie.201601420

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Abstract

A surfactant-free solution methodology, simply using water as a solvent, has been developed for the straightforward synthesis of single-phase orthorhombic SnSe nanoplates in gram quantities. Individual nanoplates are composed of {100} surfaces with {011} edge facets. Hot-pressed nanostructured compacts (Eg≈0.85 eV) exhibit excellent electrical conductivity and thermoelectric power factors (S2σ) at 550 K. S2σ values are 8-fold higher than equivalent materials prepared using citric acid as a structure-directing agent, and electrical properties are comparable to the best-performing, extrinsically doped p-type polycrystalline tin selenides. The method offers an energy-efficient, rapid route to p-type SnSe nanostructures.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Additional Information:	This is an open access article under the terms of the Creative Commons Attribution License
Publisher:	Wiley-Blackwell
ISSN:	1433-7851
Date of First Compliant Deposit:	7 February 2017
Date of Acceptance:	23 March 2016
Last Modified:	05 May 2023 19:00
URI:	https://orca.cardiff.ac.uk/id/eprint/96934

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