Tailoring the Seebeck Coefficient of Spray-Coated Poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate) Films with Nitrogen Doped Multiwalled Carbon Nanotubes
| Autor: | Ruben Sarabia-Riquelme, Matthew C. Weisenberger, John D. Craddock, Dali Qian, Camila F. Gomez |
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| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Materials science Biomedical Engineering Bioengineering General Chemistry Polymer Condensed Matter Physics Polystyrene sulfonate chemistry.chemical_compound chemistry Chemical engineering PEDOT:PSS Seebeck coefficient Thermoelectric effect Polyethylene terephthalate General Materials Science Thin film Poly(3 4-ethylenedioxythiophene) |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 20:3576-3581 |
| ISSN: | 1533-4880 |
| Popis: | The thermoelectric properties of flexible thin films fabricated from two commercial poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) formulations filled with multiwalled carbon nanotubes (MWCNT) and nitrogen-doped MWCNT (N-MWCNT) were investigated. A simple spray-coating method for the fabrication of such flexible films on a polyethylene terephthalate substrate was developed. While increasing the MWCNT concentration had little effect on the thermoelectric properties, increasing the N-MWCNT concentration resulted in the emergence of an overall n-type semiconducting behavior and, thereby, tailoring the Seebeck coefficient of the composite films from p-type to n-type was shown. The Seebeck coefficient of the two PEDOT:PSS formulation films was inverted from 4.1 to −13.3 μV/K and from 12.5 to −10.9 μV/K respectively, with increasing N-MWCNT concentration from 0 to 95 wt.%. The importance of these results for future work stems from the possibility of tailoring the behavior of a typical p-type polymer such as PEDOT:PSS and the effect that the polymer conductive grade has on the switching concentration. |
| Databáze: | OpenAIRE |
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