A bottom-up route to enhance thermoelectric figures of merit in graphene nanoribbons

Haldun Sevincli, Cem Sevik, Tahir Cagin, Gianaurelio Cuniberti

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    We propose a hybrid nano-structuring scheme for tailoring thermal and thermoelectric transport properties of graphene nanoribbons. Geometrical structuring and isotope cluster engineering are the elements that constitute the proposed scheme. Using first-principles based force constants and Hamiltonians, we show that the thermal conductance of graphene nanoribbons can be reduced by 98.8% at room temperature and the thermoelectric figure of merit, ZT, can be as high as 3.25 at T = 800 K. The proposed scheme relies on a recently developed bottom-up fabrication method, which is proven to be feasible for synthesizing graphene nanoribbons with an atomic precision.
    Original languageEnglish
    JournalScientific Reports
    Volume3
    Number of pages5
    ISSN2045-2322
    Publication statusPublished - 2013

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