A bottom-up route to enhance thermoelectric figures of merit in graphene nanoribbons.
A bottom-up route to enhance thermoelectric figures of merit in graphene nanoribbons.
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DOI:
10.1038/srep01228
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发表时间:
2013
影响因子:
4.6
通讯作者:
Cuniberti, Gianaurelio
中科院分区:
文献类型:
--
作者:
Sevincli, Haldun;Sevik, Cem;Cagin, Tahir;Cuniberti, Gianaurelio
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.
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