Please use this identifier to cite or link to this item: https://doi.org/10.1002/pi.5921
Title: Enhanced thermoelectric performance of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) with long-term humidity stability via sequential treatment with trifluoroacetic acid
Authors: Yemata, Temesgen Atnafu
Kyaw, Aung Ko Ko
Zheng, Yun
Wang, Xizu
Zhu, Qiang
Chin, Wee Shong 
Xu, Jianwei 
Keywords: Science & Technology
Physical Sciences
Polymer Science
thermoelectric
conducting polymers
trifluoroacetic acid
structure-property relations
humidity stability
ELECTRICAL-CONDUCTIVITY
SEEBECK COEFFICIENT
SULFONATE) FILM
POWER
ELECTRODE
OPTIMIZATION
TRANSPARENT
PROGRESS
Issue Date: 7-Nov-2019
Publisher: WILEY
Citation: Yemata, Temesgen Atnafu, Kyaw, Aung Ko Ko, Zheng, Yun, Wang, Xizu, Zhu, Qiang, Chin, Wee Shong, Xu, Jianwei (2019-11-07). Enhanced thermoelectric performance of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) with long-term humidity stability via sequential treatment with trifluoroacetic acid. POLYMER INTERNATIONAL 69 (1) : 84-92. ScholarBank@NUS Repository. https://doi.org/10.1002/pi.5921
Abstract: This paper reports a range of effective sequential chemical processes to enhance the thermoelectric performance of conducting poly(3,4-ethylenedioxythiophene) films doped with poly(styrene sulfonate) anions (PEDOT:PSS). The electrical conductivity of the PEDOT:PSS films was significantly increased from 0.33 to 3748 S cm−1 after a series of sequential treatments with trifluoroacetic acid (TFA) while the Seebeck coefficient and thermal conductivity were slightly reduced from 17.5 ± 1.2 to 16.0 ± 1.1 μV K−1 and 0.537 to 0.415 W m–1 K−1 for the pristine film and treated film, respectively, leading to a significant improvement in power factor up to 97.1 ± 5.4 μW m–1 K−2. More importantly, around 80% of the electrical conductivity and Seebeck coefficient was retained after 20 days for these TFA-treated PEDOT:PSS films, revealing the potential for real thermoelectric applications. © 2019 Society of Chemical Industry.
Source Title: POLYMER INTERNATIONAL
URI: https://scholarbank.nus.edu.sg/handle/10635/193180
ISSN: 09598103
10970126
DOI: 10.1002/pi.5921
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