Fig. 4 | Nature Communications

Fig. 4

From: Interfacial oxygen vacancies yielding long-lived holes in hematite mesocrystal-based photoanodes

Fig. 4

Charge transfer efficiencies. a Mott–Schottky plots of the samples. Capacitances (Cs) were determined from electrochemical impedance measurements at a frequency of 10 kHz in the dark. b Electrochemical impedance spectra measured for the Ti–Fe2O MC, Fe2O3 MC, and Fe2O3 SC photoanodes. The inset shows the equivalent circuit. c The energetic distribution of NSS as a function of the applied potentials. d The correlation between NSS, Nd, and current density at 1.23 V vs. RHE

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