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The curious out-of-plane conductivity of PEDOT:PSS

For its application as transparent conductor in light-emitting diodes and photovoltaic cells, both the in-plane and out-of-plane conductivity of PEDOT:PSS are important. However, studies into the conductivity of PEDOT:PSS rarely address the out-of-plane conductivity and those that do, report widely...

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Bibliographic Details
Main Authors: Ruit, Kevin van de (Author) , Katsouras, Ilias (Author) , Bollen, Dirk (Author) , Mol, Antonius Maria Bernardus van (Author) , Janssen, René A. J. (Author) , Leeuw, Dago M. de (Author) , Kemerink, Martijn (Author)
Format: Article (Journal)
Language:English
Published: 19 June 2013
In: Advanced functional materials
Year: 2013, Volume: 23, Issue: 46, Pages: 5787-5793
ISSN:1616-3028
DOI:10.1002/adfm.201301175
Online Access:Verlag, Volltext: https://doi.org/10.1002/adfm.201301175
Verlag, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/adfm.201301175
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Author Notes:Kevin van de Ruit, Ilias Katsouras, Dirk Bollen, Ton van Mol, René A.J. Janssen, Dago M. de Leeuw, and Martijn Kemerink
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Summary:For its application as transparent conductor in light-emitting diodes and photovoltaic cells, both the in-plane and out-of-plane conductivity of PEDOT:PSS are important. However, studies into the conductivity of PEDOT:PSS rarely address the out-of-plane conductivity and those that do, report widely varying results. Here a systematic study of the out-of-plane charge transport in thin films of PEDOT:PSS with varying PSS content is presented. To this end, the PEDOT:PSS is enclosed in small interconnects between metallic contacts. An unexpected, but strong dependence of the conductivity on interconnect diameter is observed for PEDOT:PSS formulations without high boiling solvent. The change in conductivity correlates with a diameter dependent change in PEDOT:PSS layer thickness. It is suggested that the order of magnitude variation in out-of-plane conductivity with only a 3-4-fold layer thickness variation can quantitatively be explained on basis of a percolating cluster model.
Item Description:Gesehen am 05.12.2019
Physical Description:Online Resource
ISSN:1616-3028
DOI:10.1002/adfm.201301175

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