Insights into One-Dimensional Thermoelectric Materials: A Concise Review of Nanowires and Nanotubes
Yükleniyor...
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Multidisciplinary Digital Publishing Institute (MDPI)
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This brief review covers the thermoelectric properties of one-dimensional materials, such as nanowires and nanotubes. The highly localised peaks of the electronic density of states near the Fermi levels of these nanostructured materials improve the Seebeck coefficient. Moreover, quantum confinement leads to discrete energy levels and a modified density of states, potentially enhancing electrical conductivity. These electronic effects, coupled with the dominance of Umklapp phonon scattering, which reduces thermal conductivity in one-dimensional materials, can achieve unprecedented thermoelectric efficiency not seen in two-dimensional or bulk materials. Notable advancements include carbon and silicon nanotubes and Bi3Te2, Bi, ZnO, SiC, and Si1−xGex nanowires with significantly reduced thermal conductivity and increased ZT. In all these nanowires and nanotubes, efficiency is explored as a function of the diameter. Among these nanomaterials, carbon nanotubes offer mechanical flexibility and improved thermoelectric performance. Although carbon nanotubes theoretically have high thermal conductivity, the improvement of their Seebeck coefficient due to their low-dimensional structure can compensate for it. Regarding flexibility, economic criteria, ease of fabrication, and weight, carbon nanotubes could be a promising candidate for thermoelectric power generation. © 2024 by the authors.
Açıklama
Anahtar Kelimeler
Thermal Conductivity, Nanowire, Flexibility, Figure of Merit
Kaynak
Nanomaterials
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
14
Sayı
15
Künye
Latronico, G., Asnaashari Eivari, H., Mele, P., & Assadi, M. H. N. (2024). Insights into One-Dimensional Thermoelectric Materials: A Concise Review of Nanowires and Nanotubes. Nanomaterials, 14(15), 1272.
