A morphological model for the solvent-enhanced conductivity of PEDOT:PSS thin films
The well-known enhanced conductivity of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) thin films that is obtained by addition of high-boiling solvents like sorbitol to the aqueous dispersion used for film deposition is shown to be associated with a rearrangement of PEDOT-rich...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
26 March 2008
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| In: |
Advanced functional materials
Year: 2008, Jahrgang: 18, Heft: 6, Pages: 865-871 |
| ISSN: | 1616-3028 |
| DOI: | 10.1002/adfm.200700796 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1002/adfm.200700796 Verlag, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/adfm.200700796 
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| Verfasserangaben: | by Alexandre Mantovani Nardes, René A.J. Janssen, and Martijn Kemerink |
| Zusammenfassung: | The well-known enhanced conductivity of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) thin films that is obtained by addition of high-boiling solvents like sorbitol to the aqueous dispersion used for film deposition is shown to be associated with a rearrangement of PEDOT-rich clusters into elongated domains, as evidenced from STM and AFM. Consistently, temperature dependent conductivity measurements for sorbitol-treated films reveal that charge transport occurs via quasi 1D variable range hopping (VRH), in contrast to 3D VRH for untreated PEDOT:PSS films. The typical hopping distance of 60-90 nm, extracted from the conductivity measurements is consistent with hopping between the 30-40 nm sized grains observed with scanning probe microscopy. |
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| Beschreibung: | Gesehen am 16.12.2019 |
| Beschreibung: | Online Resource |
| ISSN: | 1616-3028 |
| DOI: | 10.1002/adfm.200700796 |