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The Curious Out-of-Plane Conductivity of PEDOT:PSS
Eindhoven University of Technology, Netherlands.
University of Groningen, Netherlands.
Agfa Gevaert NV, Belgium.
Holst Centre TNO, Netherlands.
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2013 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 23, no 46, 5787-5793 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2013. Vol. 23, no 46, 5787-5793 p.
Keyword [en]
charge transport; conducting polymers; organic electronics
National Category
Physical Sciences
URN: urn:nbn:se:liu:diva-118125DOI: 10.1002/adfm.201301175ISI: 000328151000012OAI: diva2:813841
Available from: 2015-05-25 Created: 2015-05-22 Last updated: 2015-06-04

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Kemerink, Martijn
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Chemical and Optical Sensor SystemsThe Institute of Technology
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