Bi0.5Sb1.5Te3/PEDOT:PSS-based flexible thermoelectric film and device
Article
Article Title | Bi0.5Sb1.5Te3/PEDOT:PSS-based flexible thermoelectric film and device |
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ERA Journal ID | 3854 |
Article Category | Article |
Authors | Wang, Yuan (Author), Hong, Min (Author), Liu, Wei-Di (Author), Shi, Xiao-Lei (Author), Xu, Sheng-Duo (Author), Sun, Qiang (Author), Gao, Han (Author), Lu, Siyu (Author), Zou, Jin (Author) and Chen, Zhi-Gang (Author) |
Journal Title | Chemical Engineering Journal |
Journal Citation | 397, pp. 1-9 |
Article Number | 125360 |
Number of Pages | 9 |
Year | 2020 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 1385-8947 |
1873-3212 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.cej.2020.125360 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S1385894720313528 |
Abstract | Incorporating inorganic thermoelectric fillers into conductive polymers is one promising strategy to develop high-performance flexible thermoelectric films. However, due to the relatively high interfacial contact resistance between fillers and polymers, carriers tend to be scattered at the interfaces during the interfacial transports, which deteriorates the electrical properties of the system, and in turn leads to low energy conversion efficiency. Here, a new strategy is developed to optimize interfacial carrier transports in Bi0.5Sb1.5Te3/PEDOT:PSS composite, by coating Bi0.5Sb1.5Te3 fillers with highly conductive CuTe layer. With highly crystallized PEDOT:PSS prepared as the matrix, high-performance Cu-Bi0.5Sb1.5Te3 /PEDOT:PSS film is fabricated with promising σ of ~2300 S cm−1 and peak S2σ of 312 µW m−1 K−2 at room temperature, which reaches to a record-high value in the reported Bi0.5Sb1.5Te3/PEDOT:PSS composites. Accordingly, a home-made flexible thermoelectric device is fabricated using our prepared composites, generating a promising open-circuit thermovoltage of ~7.7 mV with the human wrist as the thermal source. This study addresses the significance of interfacial carrier transport, hinting the bright prospects of cheap conductive polymers as the effective power source of wearable electronics. |
Keywords | Thermoelectrics; Flexible; PEDOT:PSS; Bismuth telluride; Interface |
ANZSRC Field of Research 2020 | 401605. Functional materials |
Byline Affiliations | Centre for Future Materials |
University of Queensland | |
Zhengzhou University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5w0q/bi0-5sb1-5te3-pedot-pss-based-flexible-thermoelectric-film-and-device
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