Flexible Carbon Nanotube-Epitaxially Grown Nanocrystals for Micro-Thermoelectric Modules

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 46 vom: 01. Nov., Seite e2304751
1. Verfasser: Jin, Qun (VerfasserIn)
Weitere Verfasser: Zhao, Yang, Long, Xuehao, Jiang, Song, Qian, Cheng, Ding, Feng, Wang, Ziqiang, Li, Xiaoqi, Yu, Zhi, He, Juan, Song, Yujie, Yu, Hailong, Wan, Ye, Tai, Kaiping, Gao, Ning, Tan, Jun, Liu, Chang, Cheng, Hui-Ming
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article 1D van der Waals-coupling guided epitaxial growth carbon nanotube-(Bi,Sb)2Te3 hybrid flexible freestanding thermoelectric films micro-thermoelectric cooler micro-thermoelectric generator
Beschreibung
Zusammenfassung:© 2023 Wiley-VCH GmbH.
Flexible thermoelectric materials have attracted increasing interest because of their potential use in thermal energy harvesting and high-spatial-resolution thermal management. However, a high-performance flexible micro-thermoelectric device (TED) compatible with the microelectronics fabrication process has not yet been developed. Here a universal epitaxial growth strategy is reported guided by 1D van der Waals-coupling, to fabricate freestanding and flexible hybrids comprised of single-wall carbon nanotubes and ordered (Bi,Sb)2 Te3 nanocrystals. High power factors ranging from ≈1680 to ≈1020 µW m-1 K-2 in the temperature range of 300-480 K, combined with a low thermal conductivity yield a high average figure of merit of ≈0.81. The fabricated flexible micro-TED module consisting of two p-n couples of freestanding thermoelectric hybrids has an unprecedented open circuit voltage of ≈22.7 mV and a power density of ≈0.36 W cm-2 under ≈30 K temperature difference, and a net cooling temperature of ≈22.4 K and a heat absorption density of ≈92.5 W cm-2
Beschreibung:Date Revised 12.02.2024
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202304751