High-performance bismuth telluride thermoelectric thin films fabricated by using the two-step single-source thermal evaporation - Archive ouverte HAL Access content directly
Journal Articles Journal of Alloys and Compounds Year : 2020

High-performance bismuth telluride thermoelectric thin films fabricated by using the two-step single-source thermal evaporation

(1) , (1) , (1) , (1) , (1) , (1) , (2) , (1) , (1)
1
2
Ping Fan
  • Function : Author
Fu Li
  • Function : Author
Xiang-Hua Zhang
Shuo Chen
  • Function : Author
Zhuanghao Zheng
  • Function : Correspondent author
  • PersonId : 1022498

Connectez-vous pour contacter l'auteur

Abstract

Bismuth telluride (Bi2Te3) is an efficient thermoelectric material, and fabricating Bi2Te3 thin films with good thermoelectric properties is a prerequisite to realizing the potential of these materials in micro-device application. Controllable content deposition and low-negative thermal treatment are the two main challenges in preparing high-performance thin films. In this study, stoichiometric Bi2Te3 thin films were successfully fabricated via the two-step thermal vapor process with a single evaporation source. Then, the rapid thermal process, which could avoid component loss, was used to further improve the crystallinity and thermoelectric properties of thin films. The Seebeck coefficient of Bi2Te3 thin films clearly increased after rapid heat treatment, leading to enhanced power factor and good flexibility. Such thin films exhibited low thermal conductivity due to their nano-sized grains, resulting in high ZT of flexible Bi2Te3 thin films. (C) 2019 Elsevier B.V. All rights reserved.
Not file

Dates and versions

hal-02470147 , version 1 (07-02-2020)

Identifiers

Cite

Ping Fan, Peng-Cheng Zhang, Guang-Xing Liang, Fu Li, Yue-Xing Chen, et al.. High-performance bismuth telluride thermoelectric thin films fabricated by using the two-step single-source thermal evaporation. Journal of Alloys and Compounds, 2020, 819, ⟨10.1016/j.jallcom.2019.153027⟩. ⟨hal-02470147⟩
27 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More