Facile surfactant-free synthesis of p-type SnSe nanoplates with exceptional thermoelectric power factors
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 both to p-type and n-type SnSe nanostructures.
Citation
Han , G , Popuri , S , Greer , H F , Bos , J-W , Zhou , W , Knox , A , Montecucco , A , Siviter , J , Man , E , Macauley , M , Paul , D , Li , W , Paul , M , Gao , M , Sweet , T , Freer , R , Azough , F , Baig , H , Sellami , N , Mallick , T & Gregory , D 2016 , ' Facile surfactant-free synthesis of p-type SnSe nanoplates with exceptional thermoelectric power factors ' , Angewandte Chemie International Edition , vol. 55 , no. 22 , pp. 6433-6437 . https://doi.org/10.1002/anie.201601420
Publication
Angewandte Chemie International Edition
Status
Peer reviewed
ISSN
1433-7851Type
Journal article
Description
This work was financially supported by the EPSRC (EP/K022156/1) and Leverhulme Trust, Grant Number: RPG 2012-576.Collections
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