fig8

Figure 8. (A) J-V curves of ZnIn₂S₄, Mg:ZnIn₂S₄, Co:ZnIn₂S₄ and Mg:ZnIn₂S₄/Co:ZnIn₂S₄ homojunction photoanodes measured in 0.2 M Na₂SO₄ solution under AM 1.5G illumination; (B) J-t curves measured at 1.23 V vs. RHE under chopped simulated sunlight illumination with 30 s light on/off cycles; (C) Schematic diagram of Mg:ZnIn₂S₄/Co:ZnIn₂S₄ photoanode to enhance the photoelectric performance by enhancing the separation of bulk and interface charges^[79]. Copyright 2021, Elsevier. J-V: Photocurrent density-voltage; J-t: transient photocurrent density; RHE: reversible hydrogen electrode.