Fig. 1: Structure, composition and energetics of the PM6:D18:L8-BO organic IPV-anodes.
a, A schematic representation of the water oxidation IPV-anodes containing an organic photoactive layer and a self-adhesive (A) graphite sheet as a conductive protection layer (not to scale). The adhesive layer is not shown, as there is direct electrical contact between the gold and graphite layers. b, The chemical structures of PM6, D18 and L8-BO, the three photoactive materials in the ternary BHJ blend. c, The energy level diagrams for all the constituent layers of the organic IPV-anode. The shaded areas represent the bandgap of the semiconductors. The blue dashed line indicates the electrochemical potential of water oxidation to oxygen at pH 14. d, The normalized absorbance spectra of PM6, D18 and L8-BO.
