Tunable in-plane thermal conductivity of a single PEDOT:PSS nanotube

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Understanding the mechanism of thermal energy transport in a single nanotube (NT) is essential for successfully engineering nanostructured conducting polymers to apply to thermoelectrics or flexible electronic devices. We report the characterization of the in-plane thermal energy transport in a single poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) NTviadirect measurement of the in-plane thermal conductivity (kappa). We also demonstrate that the in-plane kappa of PEDOT:PSS NT can be tuned within the range of 0.19 to 1.92 W center dot m(-1)center dot K(-1)merely by changing the solvent used to treat the NTs in the post-fabrication stage. The in-plane thermal energy transport in a pristine NT, with its low in-plane kappa, is primarily due to phonons; in a sulfuric acid-treated NT however, significant electronic contributions lead to a high in-plane kappa. The present study will contribute to understanding the mechanism of thermal energy transport in highly disordered structures, such as conducting polymers, and to designing highly efficient polymer-based devices in which in-plane kappa plays a pivotal role in determining the energy conversion efficiency.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2020-04
Language
English
Article Type
Article
Citation

NANOSCALE, v.12, no.16, pp.8701 - 8705

ISSN
2040-3364
DOI
10.1039/d0nr00215a
URI
http://hdl.handle.net/10203/281262
Appears in Collection
MS-Journal Papers(저널논문)
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