Post-Electric Current Treatment Approaching High-Performance Flexible n-Type Bi 2 Te 3 Thin Films

Inorganic n-type Bi2Te3 flexible thin film, as a promising near-room temperature thermoelectric material, has attracted extensive research interest and application potentials. In this work, to further improve the thermoelectric performance of flexible Bi2Te3 thin films, a post-electric current treat...

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Bibliographic Details
Published in:Micromachines (Basel) 2022-09, Vol.13 (9)
Main Authors: Ao, Dongwei, Liu, Wei-Di, Ma, Fan, Bao, Wenke, Chen, Yuexing
Format: Article
Language:English
Online Access:Get full text
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Summary:Inorganic n-type Bi2Te3 flexible thin film, as a promising near-room temperature thermoelectric material, has attracted extensive research interest and application potentials. In this work, to further improve the thermoelectric performance of flexible Bi2Te3 thin films, a post-electric current treatment is employed. It is found that increasing the electric current leads to increased carrier concentration and electric conductivity from 1874 S cm−1 to 2240 S cm−1. Consequently, a high power factor of ~10.70 μW cm−1 K−2 at room temperature can be achieved in the Bi2Te3 flexible thin films treated by the electric current of 0.5 A, which is competitive among flexible n-type Bi2Te3 thin films. Besides, the small change of relative resistance
ISSN:2072-666X
2072-666X