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Descripción
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| We present herein a review of the thermal transport in semiconductor NWs. The main experimental achievements are presented, both smooth and surface engineered NWs, also alloyed NWs are considered; these data evidence the relevance of the thermal transport problem in these one dimensional structures. These experimental data, though scarce, permit a certain degree of contrast of the theoretical models. According to this we present a critical overview of the main theoretical approaches to the problem of the thermal conductivity of semiconductor NWs following a historic sequence. Along this way, we review a large number of models, among others the classical approaches based on the Callaway formalism, atomistic models based on molecular dynamics simulations, or the hydrodynamic approaches.One revises the contribution of the different resistive phonon scattering processes.Also, the role of normal scattering processes is discussed, as well as the recent consideration of the scattering by optic phonons. Special attention is paid to the boundary scattering which is the main cause for the thermal conductivity suppression in semiconductor NWs. The role of engineered surfaces is also discussed. | |
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Internacional
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Si |
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DOI
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10.5772/52588 |
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Edición del Libro
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1 |
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Editorial del Libro
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InTech Europe |
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ISBN
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978-953-51-0898-6 |
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Serie
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Título del Libro
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Nanowires - Recent Advances Editor: Xihong Peng |
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Desde página
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231 |
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Hasta página
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260 |