Durable hydrogen evolution from water driven by sunlight using (Ag, Cu) GaSe 2 photocathodes modified with CdS and CuGa 3 Se 5
The photoelectrochemical properties of (Ag, Cu) GaSe2 (ACGSe) modified by deposition of
CdS and CuGa3Se5 layers were investigated. The CdS and CuGa3Se5 layers formed p–n
junctions with an appropriate band diagram on the surface of the electrode and they clearly
increased the cathodic photocurrent and onset potential. The Pt, CdS, and CuGa3Se5
modified ACGSe (Pt/CdS/CuGa3Se5/ACGSe) with an appropriate thickness of CuGa3Se5
layers (ca. 100 nm) showed a cathodic photocurrent of 8.79 mA cm− 2 at 0 VRHE and an …
CdS and CuGa3Se5 layers were investigated. The CdS and CuGa3Se5 layers formed p–n
junctions with an appropriate band diagram on the surface of the electrode and they clearly
increased the cathodic photocurrent and onset potential. The Pt, CdS, and CuGa3Se5
modified ACGSe (Pt/CdS/CuGa3Se5/ACGSe) with an appropriate thickness of CuGa3Se5
layers (ca. 100 nm) showed a cathodic photocurrent of 8.79 mA cm− 2 at 0 VRHE and an …
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