Controlled electro-spray deposition of highly conductive PEDOT:PSS films

► Electro-spray (e-spray) depositions of high conductive PEDOT:PSS films were studied. ► High conductivity of 800 S/cm was obtained by controlling the solvent evaporation time. ► The conductivity of the film was governed by the macro-/nano-morphology and by residual charges. ► The high conductive films were used as a transparent top electrode in organic solar cells.