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Advanced Materials

Enhancing the Thermoelectric Power Factor by Using Invisible Dopants

Authors

  • Mona Zebarjadi,

    Corresponding author
    1. Department of Mechanical Engineering, MIT, Cambridge, 02139 Massachusetts, USA
    2. Department of Mechanical Engineering, Rutgers University, Piscataway, 08854 NJ, USA
    • Department of Mechanical Engineering, MIT, Cambridge, 02139 Massachusetts, USA.
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  • Bolin Liao,

    1. Department of Mechanical Engineering, MIT, Cambridge, 02139 Massachusetts, USA
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  • Keivan Esfarjani,

    1. Department of Mechanical Engineering, MIT, Cambridge, 02139 Massachusetts, USA
    2. Department of Mechanical Engineering, Rutgers University, Piscataway, 08854 NJ, USA
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  • Mildred Dresselhaus,

    1. Departments of Physics and Electrical Engineering and Computer Science, MIT, Cambridge, 02139 Massachusetts, USA
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  • Gang Chen

    Corresponding author
    1. Department of Mechanical Engineering, MIT, Cambridge, 02139 Massachusetts, USA
    • Department of Mechanical Engineering, MIT, Cambridge, 02139 Massachusetts, USA.
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Abstract

Nanoparticle dopants that are invisible to conduction electrons and have sharp dips in their electron scattering rate versus electron energy close to the Fermi level. Replacement of such dopants with traditional impurities results in simultaneous enhancement of the Seebeck coefficient and the electron mobility and therefore a large enhancement in the thermoelectric power factor can be achieved.

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