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Facile Surfactant‐Free Synthesis of p‐Type SnSe Nanoplates with Exceptional Thermoelectric Power Factors
Author(s) -
Han Guang,
Popuri Srinivas R.,
Greer Heather F.,
Bos JanWillem G.,
Zhou Wuzong,
Knox Andrew R.,
Montecucco Andrea,
Siviter Jonathan,
Man Elena A.,
Macauley Martin,
Paul Douglas J.,
Li Wenguang,
Paul Manosh C.,
Gao Min,
Sweet Tracy,
Freer Robert,
Azough Feridoon,
Baig Hasan,
Sellami Nazmi,
Mallick Tapas K.,
Gregory Duncan H.
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201601420
Subject(s) - crystallite , materials science , thermoelectric effect , pulmonary surfactant , orthorhombic crystal system , nanostructure , thermoelectric materials , chemical engineering , seebeck coefficient , citric acid , nanotechnology , tin , electrical resistivity and conductivity , doping , chemistry , optoelectronics , crystallography , crystal structure , thermal conductivity , organic chemistry , composite material , metallurgy , physics , electrical engineering , engineering , thermodynamics
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.