Preparation and thermoelectric properties of flexible SWCNT/PEDOT:PSS composite film

•Flexible SWCNTs/PEDOT:PSS composite films were fabricated by dilution filtration method.•Thermoelectric performance of the composite films has been improved with the addition of SWCNTs.•DMSO treatment was employed to further improve thermoelectric performance of the composite films.•A maximum power...

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Bibliographic Details
Published in:Synthetic metals 2020-03, Vol.261, p.116318, Article 116318
Main Authors: Du, Yong, Shi, Yulu, Meng, Qiufeng, Shen, Shirley Z.
Format: Article
Language:English
Subjects:
Dilution
Dimethyl sulfoxide
Electrical resistivity
Flexibility
Maximum power
Morphology
PEDOT:PSS
Power factor
Properties (attributes)
Seebeck effect
Single wall carbon nanotubes
SWCNT
Thermoelectric
Thermoelectricity
X ray photoelectron spectroscopy
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Summary:•Flexible SWCNTs/PEDOT:PSS composite films were fabricated by dilution filtration method.•Thermoelectric performance of the composite films has been improved with the addition of SWCNTs.•DMSO treatment was employed to further improve thermoelectric performance of the composite films.•A maximum power factor of 108.7 μWm−1 K-2 was obtained at 340 K. Flexible single-walled carbon nanotube (SWCNT)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) (CNT/PP) composite films have been fabricated by a simple dilution filtration method. The effects of SWCNTs content and dimethyl sulfoxide (DMSO) treatment on thermoelectric properties of the composite films have been investigated. With the content of SWCNTs increasing, both the electrical conductivity and Seebeck coefficient increase, leading to an enhancement of thermoelectric properties of the composite film. After the DMSO treatment, a maximum power factor of 108.7 μWm−1K-2 has been achieved at 340 K for the sample containing 80 wt.% SWCNTs. SEM and XPS analyses are applied to characterize morphologies and compositions of the composite films.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2020.116318