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- W2023407479 abstract "Article history: By using the atomistic nonequilibrium Green's function method, we investigate the thermoelectric properties of graphene nanoribbons in the presence of two constrictions (or hexagonal graphene quantum dots). With decreasing widths of the constrictions, the thermal conductance of the nanoribbon can be reduced largely while S 2 Ge (S is the Seebeck coefficient and Ge is the electronic conductance) remains still high as compared with the results of the pristine nanoribbon. Thus, the thermoelectric figure of merit ZT can be enhanced largely. In fact, in the presence of narrowest constrictions the ZT values of the zigzag quantum dots can exceed one at room temperature, while the ZT values of the armchair quantum dots may be close to one, depending on the size of the dot." @default.
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- W2023407479 date "2012-02-01" @default.
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- W2023407479 title "Thermoelectric properties of hexagonal graphene quantum dots" @default.
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- W2023407479 doi "https://doi.org/10.1016/j.physleta.2012.02.013" @default.
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