Dual Post-Treatments Boost Thermoelectric Performance of PEDOT:PSS Films and Their Devices
Article
Article Title | Dual Post-Treatments Boost Thermoelectric Performance of PEDOT:PSS Films and Their Devices |
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ERA Journal ID | 1682 |
Article Category | Article |
Authors | Wu, Ting, Shi, Xiao-Lei, Liu, Wei-Di, Sun, Shuai, Liu, Qingfeng and Chen, Zhi-Gang |
Journal Title | Macromolecular Materials and Engineering |
Journal Citation | 307 (12) |
Article Number | 2200411 |
Number of Pages | 8 |
Year | 2022 |
Publisher | John Wiley & Sons |
Place of Publication | Germany |
ISSN | 1438-7492 |
1439-2054 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/mame.202200411 |
Web Address (URL) | https://onlinelibrary.wiley.com/doi/10.1002/mame.202200411 |
Abstract | Owing to intrinsically high electrical conductivity and low thermoelectric conductivity, poly(3,4-ethylenedioxithiophene):poly(styrenesulfonate) (PEDOT:PSS) shows promising thermoelectric properties. However, its relatively low power factor limits the practical applications of PEDOT:PSS. Here, unique dual post-treatments by sodium sulfite (Na2SO3) and formamide (CH3NO) to boost the thermoelectric performance of flexible PEDOT:PSS films with an optimized power factor of 74.09 µW m–1 K–2 are used. Comprehensive characterizations confirm that CH3NO reduces the excessive insulating PSS and thereby increases the electrical conductivity, while Na2SO3 lowers the reduction of the doping level of PEDOT, leading to an increased Seebeck coefficient. Furthermore, the rationally post-treated PEDOT:PSS films are assembled into a flexible thermoelectric device that exhibits an open-circuit voltage of 2.8 mV using the heat from the human arm and an output power density of 2.56 µW cm–2 by a temperature difference of 25 K, indicating great potential for practical applications on sustainably charging low-grade wearable electronics. |
Keywords | Thermoelectric Performance; PSS Films ; PEDOT |
ANZSRC Field of Research 2020 | 340302. Macromolecular materials |
Byline Affiliations | Nanjing Tech University, China |
Queensland University of Technology | |
University of Queensland | |
Centre for Future Materials |
https://research.usq.edu.au/item/z02yv/dual-post-treatments-boost-thermoelectric-performance-of-pedot-pss-films-and-their-devices
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Macro Materials Eng - 2022 - Wu.pdf | ||
License: CC BY-NC-ND 4.0 | ||
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