In this work, we significantly deepen our understanding of the mechanism of electrosynthesis at a polarisable aqueous|TFT interface by preparing PEDOT thin films using the classic potentiodynamic technique of cyclic voltammetry (CV). For the first time, we show that features typical of electropolymerisation of CPs by repetitive CV cycling at solid electrode|electrolyte interfaces, such as a steady growth of the charge accumulated with each