Fig. 6
From: Interfacial oxygen vacancies yielding long-lived holes in hematite mesocrystal-based photoanodes
Time-resolved PL measurements and wavelength-dependent current generation. a Emission spectrum (Inset shows the corresponding optical transmission images) and b decay profiles collected from isolated small aggregates of Ti–Fe2O3 MCs, Fe2O3 MCs, and Fe2O3 SCs. c The proposed electronic transitions and charge recombination process in MC. d Current density at 1.23 V vs. RHE of the Ti–Fe2O3 MC photoanode under monochromatic light illumination (430 nm and 530 nm) from the back side. The normalized current density at 1.23 V vs. RHE of the Ti-Fe2O3 MC photoanodes with different film thicknesses under e 430-nm and f 530-nm monochromatic light illumination from the back side
