Fig. 4: Microstructure and PEC performance of Pt/TiO2/CdS/Sb2Se3/Au/FTO photocathodes.
From: Benchmark performance of low-cost Sb2Se3 photocathodes for unassisted solar overall water splitting
a Cross-sectional SEM image of TiO2/CdS/Sb2Se3 on Au/FTO substrate. b J–V curves for Sb2Se3 photocathodes with/without a CdS layer in pH 1 H2SO4 under simulated 1 sun air mass 1.5 G chopped illumination at a scan speed of 5 mV s−1 from positive to negative potential and c corresponding HC-STH efficiencies. d Wavelength-dependent IPCE at 0 VRHE of Sb2Se3 photocathodes with/without CdS layer. Source data used to generate this figure can be found in the Source Data file.
