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

S. R. Sarath Kumar; Ahmed Y. Alyamani; Jennifer W. Graff; Terry M. Tritt; Husam N. Alshareef

doi:10.1557/jmr.2011.198

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

S. R. Sarath Kumar, Ahmed Y. Alyamani, Jennifer W. Graff, Terry M. Tritt, Husam N. Alshareef

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

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.

Original language	English (US)
Pages (from-to)	1836-1841
Number of pages	6
Journal	Journal of Materials Research
Volume	26
Issue number	15
DOIs	https://doi.org/10.1557/jmr.2011.198
State	Published - Jul 29 2011

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.

ASJC Scopus subject areas

Mechanics of Materials
General Materials Science
Mechanical Engineering
Condensed Matter Physics

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title = "Pulsed laser deposition and thermoelectric properties of In-and Yb-doped CoSb3 skutterudite thin films",

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 {\textcopyright} Materials Research Society 2011.",

author = "{Sarath Kumar}, {S. R.} and Alyamani, {Ahmed Y.} and Graff, {Jennifer W.} and Tritt, {Terry M.} and Alshareef, {Husam N.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.",

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AU - Alyamani, Ahmed Y.

AU - Graff, Jennifer W.

AU - Tritt, Terry M.

AU - Alshareef, Husam N.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.

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N2 - 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.

AB - 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.

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

Abstract

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