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A New Composite Structure of PEDOT/PSS: Macro-Separated Layers by a Polyelectrolyte Brush

Sciprofile linkKeita Yasumoro, Sciprofile linkYushi Fujita, Sciprofile linkHideki Arimatsu, Sciprofile linkTakuya Fujima
Published: 16 February 2020
 by  MDPI
Polymers , Volume 12; doi:10.3390/polym12020456

Abstract: Polyethylene dioxythiophene and polyethylene sulfonic acid (PEDOT/PSS) composite is gathering attention as an organic transparent conductive film material. However, it requires a core-shell structure in which conductive PEDOT is covered with insulating PSS. Providing film formability and a carrier to PEDOT, the PSS shell hinders carrier conduction as an insulating barrier. In this study, we realized that creating a macro-separated PEDOT/PSS composite by using a polyelectrolyte brush substrate and in-situ PEDOT polymerization without the PSS barrier increases durability and conductivity in comparison with commercially available PEDOT/PSS film, achieving a conductivity of 5000–6000 S/cm.
Keywords: conductive polymer / transparent / PEDOT / Polyelectrolyte Brush

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