Thermal Conductivity of Si Nanowires and Ultra Thin-Layers Using Atomistic Phonon Dispersions
نویسندگان
چکیده
Low dimensional materials allow for a drastic reduction in thermal conductivity due to enhanced phonon-boundary scattering, such that high ZT values are achieved. This was also experimentally demonstrated for traditionally poor thermoelectric materials such as silicon [1,2]. The structure of phonon modes in low dimensional channels and their influence on thermal conductivity, however, is still not well understood. Theoretical investigations on this topic require the consideration of atomistic phonon dispersions (beyond the traditionally employed bulk dispersions). These can provide insight into the nature of low-dimensional thermal transport and guidance for improved thermoelectric efficiency.
منابع مشابه
Thermal Conductivity of Si Nanowires Using Atomistic Phonon Dispersions
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