Fig. 5: Charge carrier kinetics in NiPS3/CdS system.

a Transient-state and b steady-state SPV spectra of 0.0N and 20.0N. c CPD test of 0.0N in the dark and under light irradiation. High-resolution XPS spectra of d Ni 2p, e P 2p and f S 2p of NiPS3 UNSs with the light on and off, respectively. High-resolution XPS spectra of g Ni 2p, h Cd 3d and i S 2p of 20.0N with the light on and off, respectively.