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Creators/Authors contains: "Rosul, Md. Golam"

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  1. ; ; (, The Journal of Physical Chemistry C)
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  2. ; (, The Journal of Physical Chemistry C)
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  3. ; ; ; (, Physical Review B)
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  4. ; ; ; ; ; ; ; ; ; ; et al (, Materials Today Physics)
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  5. ; ; ; ; (, Electrochimica Acta)
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  6. ; ; ; ; ; ; ; (, Science Advances)
    Solid-state thermionic devices based on van der Waals structures were proposed for nanoscale thermal to electrical energy conversion and integrated electronic cooling applications. We study thermionic cooling across gold-graphene-WSe 2 -graphene-gold structures computationally and experimentally. Graphene and WSe 2 layers were stacked, followed by deposition of gold contacts. The I - V curve of the structure suggests near-ohmic contact. A hybrid technique that combines thermoreflectance and cooling curve measurements is used to extract the device ZT . The measured Seebeck coefficient, thermal and electrical conductance, and ZT values at room temperatures are in agreement with the theoretical predictions using first-principles calculations combined with real-space Green’s function formalism. This work lays the foundation for development of efficient thermionic devices. 
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