Photoelectrolysis tandem cell device

To consider the photolysis of water based on the inorganic equivalent of the Z-scheme in nature, semiconductor tandem-type structures, such as shown in Fig. 17, can be analyzed. It should be noted that the structure shown in Fig. 17 represents a solid state analogon of two half-cells for the photoelectrolysis of water in a joint scheme. Therefore, compared to solid state devices with two pn junctions, the band bending of the structure shown develops at the respective electrolyte contact or by forming Schottky-type junctions with the electrocatalysts at the surfaces which then... 

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