Improvement of Power Factor of CoSb3 Thermoelectric Thin Films via Microstructure Optimization - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Coatings Année : 2017

Improvement of Power Factor of CoSb3 Thermoelectric Thin Films via Microstructure Optimization

Résumé

Skutterudite CoSb3 has emerged as one of the most studied candidate materials for thermoelectric applications. In this work, CoSb3 thin films were prepared by radio frequency sputtering, and their microstructure was investigated with emphasis on the effect of target composition and deposition temperature. The goal was to enhance the thermoelectric properties of CoSb3 thin films via microstructure optimization. Results showed that the Sb content of films gradually decreased with increasing deposition temperature. Although the thin films prepared by the target with a Co and Sb element ratio of 1:3.5 approached the ideal stoichiometric ratio, they showed poor thermoelectric properties due to the formation of an additional Sb phase. By contrast, the thin films obtained with insufficient Sb showed a single CoSb3 phase and good thermoelectric properties. The mechanism behind this difference was studied accordingly. The power factor of the thin films was enhanced due to their dense structure and good crystallization.

Domaines

Chimie Matériaux
Fichier principal
Vignette du fichier
Zheng - Improvement of Power Factor.pdf (4.93 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01671257 , version 1 (21-06-2018)

Licence

Paternité

Identifiants

Citer

Zhuanghao Zheng, Meng Wei, Fu Li, Jingting Luo, Guangxing Liang, et al.. Improvement of Power Factor of CoSb3 Thermoelectric Thin Films via Microstructure Optimization. Coatings, 2017, 7 (11), pp.205. ⟨10.3390/coatings7110205⟩. ⟨hal-01671257⟩
64 Consultations
84 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More