PEDOT:PSS-based screen-printable inks for H2O2 electrochemical detection

•Influence of PEDOT:PSS ratio in inks for screen printing sensors has been study.•Reducing PSS content hinders dispersion stability and therefore film conductivity.•Green surfactants have been used satisfactorily to replace Triton™ X-100.•First time reported enzymeless H2O2 sensor with PEDOT:PSS as the unique active part.•Valuable sensitivities have been achieved by PEDOT:PSS sensors for H2O2 detection.