Achieving optimum carrier concentrations in p-doped SnS thermoelectrics

Physical Chemistry Chemical Physics : PCCP
Sandip BhattacharyaGeorg K H Madsen

Abstract

Tin(II)sulfide, SnS, is a commercially viable and environmentally friendly thermoelectric material. Recently it was shown how the carrier concentration and the thermoelectric power factor can be optimized by Ag-doping in a sulphur rich environment. Theoretical calculations lead to a fairly accurate estimation of the carrier concentration, whereas the potential of doping with Li(+) is strongly overestimated. Two principally ubiquitous effects that can result in decreasing the hole concentration, namely the formation of coupled defect complexes and oxidation of the dopant, are discussed as possible origins of this disagreement. It is shown that oxidation limits the chemical potential of Li beyond that already set by the formation of Li2S. This work serves as a comprehensive guide to achieve an efficient p-doped SnS thermoelectric material.

References

Dec 15, 1994·Physical Review. B, Condensed Matter·P E Blöchl
Feb 15, 1995·Physical Review. B, Condensed Matter·G Makov, M C Payne
Oct 15, 1996·Physical Review. B, Condensed Matter·G Kresse, J Furthmüller
Mar 13, 2014·Angewandte Chemie·Gregory S PomrehnG Jeffrey Snyder
Aug 15, 2014·Physical Chemistry Chemical Physics : PCCP·Chandan BeraGeorg K H Madsen

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Citations

Jul 23, 2015·Journal of the American Chemical Society·Antoine de KergommeauxPeter Reiss
Sep 4, 2015·Magnetic Resonance in Chemistry : MRC·Philippe LesotOlivier Lafon
Jan 27, 2017·Journal of the American Chemical Society·Fabian O von RohrRobert J Cava
Jan 14, 2017·Physical Review Letters·Antoine DewandreMatthieu J Verstraete
Jul 9, 2016·Nanotechnology·Robin SternGeorg K H Madsen

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