Abstract: A method produces a coating including a conjugated polymer on a substrate. The method includes the steps of: —providing a substrate, —introducing a conjugated polymer coating forming material into an atmospheric pressure plasma discharge, or into the reactive gas stream resulting therefrom, —simultaneously with the introduction of a coating forming material, introducing an additional material into the plasma discharge or the reactive gas stream resulting therefrom, —exposing the substrate to the plasma discharge or the reactive gas stream resulting therefrom, thereby obtaining the coating.