Facile Surfactant‐Free Synthesis of p‐Type SnSe Nanoplates with Exceptional Thermoelectric Power Factors. (20th April 2016)

• Record Type: Journal Article
• Authors: 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; Sweet, Tracy; Freer, Robert; Azough, Feridoon; Baig, Hasan; Sellami, Nazmi; Mallick, Tapas K.; Gregory, Duncan H.
• Is Part Of: Angewandte Chemie. Volume 128:Number 22(2016)
• Page Start: 6543
• Page End: 6547
• Publication Date: 2016-04-20
• Subjects: Festkörperstrukturen -- Nanomaterialien -- Syntheseverfahren -- Thermoelektrika -- Zinnselenid; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201601420
• Languages: English
• ISSNs: 0044-8249

Abstract

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 ( E g ≈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.