Fig. 5: PEC performance for HER.
From: Interface-driven energy-independent charge extraction in GaN photocatalysts
a Schematic diagram of Pt/GaN photocathode for the PEC hydrogen revolution reaction. b Current density-voltage curves of the GaN and Pt/GaN samples measured under Xe-lamp illumination in 0.5 M Na2SO4. c Chronoamperometric I-t curves of the GaN and Pt/GaN samples measured at the applied potential of −0.4 V vs. RHE. d Calculated charge separation efficiencies of the GaN and Pt/GaN photoelectrodes under external bias. e PEIS curves of the GaN and Pt/GaN samples in 0.5 M Na2SO4.
