Thermoelectric Power Factor Limit of a 1D Nanowire
نویسندگان
چکیده
منابع مشابه
Thermoelectric Power Factor of Ultra-Narrow Silicon Nanowires
The thermoelectric performance of materials is determined by the figure of merit ZT=σS2/(κe+κl), where σ is the electrical conductivity, S is the Seebeck coefficient and κe and κl are the electronic and lattice contributions to the thermal conductivity, respectively. The interrelation between these quantities has traditionally kept ZT low, around unity. Nanomaterials have recently attracted sig...
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We analyze the thermoelectric power factor in ultra-narrow low-dimensional silicon nanowires (NWs) by employing atomistic considerations for the electronic structures and linearized Boltzmann transport theory. We consider different transport orientations and both n-type and p-type NWs. We show that the NW properties are highly anisotropic, especially for p-type, and as the diameter is reduced f...
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Thermoelectric conversion is an energy harvesting technology that directly converts waste heat from various sources into electricity by the Seebeck effect of thermoelectric materials with a large thermopower (S), high electrical conductivity (σ), and low thermal conductivity (κ). State-of-the-art nanostructuring techniques that significantly reduce κ have realized high-performance thermoelectri...
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Silicon nanowires (NWs) of small diameters have attracted significant attention as efficient thermoelectric materials since the work of Hicks and Dresselhaus [1], who pointed out that low dimensionality can be beneficial to the Seebeck coefficient. The recent results of Boukai et al. [2], and Hochbaum et al. [3] showed that it is indeed possible to achieve ZT~0.5 at room temperature in Si NWs o...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2018
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.120.177703