Abstract Poly(3,4-ethyledioxythiophene), or PEDOT, is a well-known polymer used in organic electronics due to its high electrical conductivity, flexibility and optical transparency. This study proposes a simple and fast method to obtain a conductive ink based on PEDOT aqueous dispersion, stable for months without surfactants, polymers, or additives, formed by polymer nanoparticles with low metallic content. PEDOT was obtained by oxidative polymerization of the monomer with anhydrous iron(III) chloride in acetonitrile. The obtained solid was washed and the residue content is decreased to lower than 0.5%. Fresh polymerized and wet PEDOT was sonicated in water and resulted in aqueous ink with concentration up to 1.145 g L−1, stabilized by electrostatic repulsion. This conductive ink was deposited via air-brush technique on glass substrates and has formed conductive and transparent thin films with sheet resistances of 1 and 20 kΩ sq−1 and transmittances at 550 nm of 50% and 80% respectively. Those electrodes have PEDOT distributed over macroscopic distances and recovering the entire substrates, which shows the great potential of the aqueous PEDOT ink as well as the deposition technique to be used in organic electronic devices.

中文翻译：

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基于分散在水中的 PEDOT 纳米粒子的导电油墨，不含有机溶剂、钝化剂或金属残留物

摘要 聚（3,4-乙基二氧噻吩）或 PEDOT 是一种众所周知的聚合物，由于其高导电性、柔韧性和光学透明性而用于有机电子产品。这项研究提出了一种简单快速的方法来获得基于 PEDOT 水分散体的导电油墨，该油墨在没有表面活性剂、聚合物或添加剂的情况下稳定数月，由金属含量低的聚合物纳米颗粒形成。PEDOT 是通过单体与无水氯化铁 (III) 在乙腈中的氧化聚合获得的。洗涤所得固体，残留物含量降至0.5%以下。新鲜聚合和湿的 PEDOT 在水中进行超声处理，产生浓度高达 1.145 g L-1 的水性油墨，通过静电排斥稳定。这种导电油墨通过气刷技术沉积在玻璃基板上，并形成了薄层电阻为 1 和 20 kΩ sq-1 且在 550 nm 处的透射率分别为 50% 和 80% 的导电和透明薄膜。这些电极具有分布在宏观距离上并回收整个基板的 PEDOT，这显示了水性 PEDOT 墨水以及用于有机电子设备的沉积技术的巨大潜力。