Electronic and thermoelectric properties of CoSbS and FeSbS

Parker, David S; Singh, David J; Sales, Brian C; McGuire, Michael A; May, Andrew F; Wang, Hsin

doi:10.1103/PhysRevB.87.045205

Title: Electronic and thermoelectric properties of CoSbS and FeSbS

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Abstract

We present a combined theoretical and experimental study of the potential thermoelectric performance of three transition metal antimonide sulfides, CoSbS, FeSbS and NiSbS. From theory we find that NiSbS is metallic and hence of little interest regarding thermoelectric performance. CoSbS and FeSbS are both semiconductors with rather heavy valence and conduction bands, whose thermopower can exceed 200 $$\mu$$V/K at temperatures of 900 K and carrier concentrations of 10$$^{21}$$cm$$^{-3}$$, which is similar to the $$n$$-type high performance thermoelectric filled skutterudites. The experimental results on several non-optimized $$n$$-type CoSbS samples confirm its semiconducting nature and indicate a potential for good high temperature thermoelectric performance, finding a ZT for two of the samples of 0.35 at 773 K. Substantially higher ZT values may be possible if the lattice thermal conductivity can be reduced by alloying and the effects of extrinsic scattering, which appear to be substantial in the experimental results, are reduced.

Authors:

Parker, David S ^[1]; Singh, David J ^[1]; Sales, Brian C ^[1]; McGuire, Michael A ^[1]; May, Andrew F ^[1]; Wang, Hsin ^[1]

ORNL

Publication Date:: Tue Jan 01 00:00:00 EST 2013

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 1073669

DOE Contract Number:: DE-AC05-00OR22725

Resource Type:: Journal Article

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 87; Journal Issue: 4; Journal ID: ISSN 1098--0121

Country of Publication:: United States

Language:: English

Subject:: thermoelectrics; semiconductors

Citation Formats


                    Parker, David S, Singh, David J, Sales, Brian C, McGuire, Michael A, May, Andrew F, and Wang, Hsin. Electronic and thermoelectric properties of CoSbS and FeSbS.  United States: N. p., 2013. 
        Web.  doi:10.1103/PhysRevB.87.045205.

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                    Parker, David S, Singh, David J, Sales, Brian C, McGuire, Michael A, May, Andrew F, & Wang, Hsin. Electronic and thermoelectric properties of CoSbS and FeSbS.  United States.  https://doi.org/10.1103/PhysRevB.87.045205

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                    Parker, David S, Singh, David J, Sales, Brian C, McGuire, Michael A, May, Andrew F, and Wang, Hsin. 2013.  
        "Electronic and thermoelectric properties of CoSbS and FeSbS".  United States.  https://doi.org/10.1103/PhysRevB.87.045205.

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@article{osti_1073669,

  title        = {Electronic and thermoelectric properties of CoSbS and FeSbS},

  author       = {Parker, David S and Singh, David J and Sales, Brian C and McGuire, Michael A and May, Andrew F and Wang, Hsin},

  abstractNote = {We present a combined theoretical and experimental study of the potential thermoelectric performance of three transition metal antimonide sulfides, CoSbS, FeSbS and NiSbS. From theory we find that NiSbS is metallic and hence of little interest regarding thermoelectric performance. CoSbS and FeSbS are both semiconductors with rather heavy valence and conduction bands, whose thermopower can exceed 200 $\mu$V/K at temperatures of 900 K and carrier concentrations of 10$^{21}$cm$^{-3}$, which is similar to the $n$-type high performance thermoelectric filled skutterudites. The experimental results on several non-optimized $n$-type CoSbS samples confirm its semiconducting nature and indicate a potential for good high temperature thermoelectric performance, finding a ZT for two of the samples of 0.35 at 773 K. Substantially higher ZT values may be possible if the lattice thermal conductivity can be reduced by alloying and the effects of extrinsic scattering, which appear to be substantial in the experimental results, are reduced.},

  doi          = {10.1103/PhysRevB.87.045205},

  url          = {https://www.osti.gov/biblio/1073669},
  journal      = {Physical Review B},

  issn         = {1098--0121},

  number       = 4,

  volume       = 87,

  place        = {United States},

  year         = {Tue Jan 01 00:00:00 EST 2013},

  month        = {Tue Jan 01 00:00:00 EST 2013}

}

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https://doi.org/10.1103/PhysRevB.87.045205

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