Artificial photosynthesis: New, stable photocathode with great potential

A German team has developed a new composite photocathode for generating hydrogen using sunlight. The photocathode consists of a thin film of chalcopyrite produced by HZB/PVcomB coated with a newly developed thin film of titanium dioxide containing platinum nanoparticles. This layer protects the chalcopyrite thin film from corrosion, it acts as a catalyst to speed-up formation of hydrogen even shows photoelectric current density and voltage comparable to those of a chalcopyrite-based thin film solar cell.

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