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    Pulsed laser deposition and thermoelectric properties of In-and Yb-doped CoSb3 skutterudite thin films

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    Type
    Article
    Authors
    Sarath Kumar, S. R.
    Alyamani, Ahmed Y.
    Graff, Jennifer W.
    Tritt, Terry M.
    Alshareef, Husam N. cc
    KAUST Department
    Functional Nanomaterials and Devices Research Group
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2011-07-29
    Online Publication Date
    2011-07-29
    Print Publication Date
    2011-08
    Permanent link to this record
    http://hdl.handle.net/10754/561824
    
    Metadata
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    Abstract
    In-and Yb-doped CoSb3 thin films were prepared by pulsed laser deposition. Process optimization studies revealed that a very narrow process window exists for the growth of single-phase skutterudite films. The electrical conductivity and Seebeck coefficient measured in the temperature range 300-700 K revealed an irreversible change on the first heating cycle in argon ambient, which is attributed to the enhanced surface roughness of the films or trace secondary phases. A power factor of 0.68 W m-1 K-1 was obtained at ∼700 K, which is nearly six times lower than that of bulk samples. This difference is attributed to grain boundary scattering that causes a drop in film conductivity. Copyright © Materials Research Society 2011.
    Citation
    Sarath Kumar, S. R., Alyamani, A., Graff, J. W., Tritt, T. M., & Alshareef, H. N. (2011). Pulsed laser deposition and thermoelectric properties of In- and Yb-doped CoSb3 skutterudite thin films. Journal of Materials Research, 26(15), 1836–1841. doi:10.1557/jmr.2011.198
    Sponsors
    HA acknowledges the baseline funding from King Abdallah University of Science and Technology (KAUST) and the faculty initiated collaboration fund (FIC) grant. T. M. Tritt would like to acknowledge the financial support from Department of Energy/Experimental Program to Stimulate Competitive Research (DOE/EPSCoR) Implementation Grant No. (DE-FG02-04ER-46139) for the work at Clemson.
    Publisher
    Cambridge University Press (CUP)
    Journal
    Journal of Materials Research
    DOI
    10.1557/jmr.2011.198
    ae974a485f413a2113503eed53cd6c53
    10.1557/jmr.2011.198
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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