Optimisation of Processing, Conductivity and Adhesion of PEDOT:PSS Films

聚（3,4-乙烯二氧噻吩）掺杂聚（苯乙烯磺酸盐）（通常简称为PEDOT:PSS）是一种半导体聚合物体系，通常由水溶液形成薄膜，可以取代光电器件中的氧化铟锡（ITO）。然而，PEDOT:PSS的电导率无法与ITO的电导率相匹配，因此需要进一步增强电导率来提高电导率。目前的方法利用挥发性溶剂来产生所需的导电性，但它们不环保，并且难以在批量生产规模上使用。此外，PEDOT:PSS与柔性基板（例如可用于柔性平板显示器）的附着力相对较差。该项目将侧重于通过使用无毒表面活性剂Tween 80来增强导电性，并通过使用聚多巴胺涂层来改善对柔性基材的附着力。

Poly(3,4-ethylene dioxythyophene) doped with Poly(styrene sulfonate) (often shortened to PEDOT:PSS) is a semi-conducting polymer system, normally formed into films from an aqueous solution, that could replace indium tin oxide (ITO) in optoelectric devices. However, PEDOT:PSS conductivity cannot match that of ITO on its own so further conductivity enhancements are employed to improve the conductivity. Current methods utilise volatile solvents to create the required conductivity but they are not environmentally friendly and are difficult to use on a bulk manufacturing scale. Furthermore, the adhesion of PEDOT:PSS to flexible substrates (which could be used for flexible flat panel displays for example) is relatively poor. This project will focus on the enhancement of conductivity through the use of the non-toxic surfactant Tween 80 and the improvement of adhesion to flexible substrates through the use of a polydopamine coating.