Fig. 5

(a) J–V characteristics of 63NiO/GaP for the different thicknesses of 63NiO. (b) Electron current density distribution of 63NiO/GaP for the different thicknesses of 63NiO. (c) Hole current density distribution of 63NiO/GaP for the different thicknesses of 63NiO. (d) Total current density distribution of 63NiO/GaP for the different thicknesses of 63NiO.