FIGURE 6 (A) TRPL spectra of samples. (B) Photocurrent density and (C) FECO and FEH2 of the Au-TiO2/InP photocathode. Reproduced with permission.[82] Copyright 2021, American Chemical Society. (D) Schematic of the fabrication process, (E) LSV curves, and (F) FECO and FEH2 of the b-Au1/Si photocathode. Reproduced with permission.[84] Copyright 2023, Elsevier.(G) Schematic illustration of the n+pSi μW/Cu photocathode. (H) jCH4 and (I) jC2H4 of the n+pSi μW/Cu photocathode. Reproduced with permission.[88] Copyright 2020,