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Issue 40, 2018
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Stable-radicals increase the conductance and Seebeck coefficient of graphene nanoconstrictions

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Abstract

Nanoscale thermoelectricity is an attractive target technology, because it can convert ambient heat into electricity for powering embedded devices in the internet of things. We demonstrate that the thermoelectric performance of graphene nanoconstrictions can be significantly enhanced by the presence of stable radical adsorbates, because radical molecules adsorbed on the graphene nanoconstrictions create singly-occupied orbitals in the vicinity of Fermi energy. This in turn leads to sharp features in their transmission functions close to Fermi energy, which increases the electrical conductance and Seebeck coefficient of the nanoconstrictions. This is a generic feature of radical adsorbates and can be employed in the design of new thermoelectric devices and materials.

Graphical abstract: Stable-radicals increase the conductance and Seebeck coefficient of graphene nanoconstrictions

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Publication details

The article was received on 15 Jun 2018, accepted on 02 Oct 2018 and first published on 03 Oct 2018


Article type: Paper
DOI: 10.1039/C8NR04869J
Citation: Nanoscale, 2018,10, 19220-19223
  • Open access: Creative Commons BY license
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    Stable-radicals increase the conductance and Seebeck coefficient of graphene nanoconstrictions

    M. Noori, H. Sadeghi and C. J. Lambert, Nanoscale, 2018, 10, 19220
    DOI: 10.1039/C8NR04869J

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