Facile surfactant-free synthesis of p-type SnSe nanoplates with exceptional thermoelectric power factors
Han, G; Popuri, SR; Greer, HF; et al.Bos, JW; Zhou, W; Knox, AR; Montecucco, A; Siviter, J; Man, EA; Macauley, M; Paul, DJ; Li, WG; Paul, MC; Gao, M; Sweet, T; Freer, R; Azough, F; Baig, H; Sellami, N; Mallick, TK; Gregory, DH
Date: 23 May 2016
Article
Journal
Angewandte Chemie International Edition
Publisher
Wiley
Publisher DOI
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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 ...
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 (S(2) σ) at 550 K. S(2) σ 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.
Engineering
Faculty of Environment, Science and Economy
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