Development of photoelectrochemical device based on W-BiVO4 and V2O5 for solar energy conversion into electricity or chemical energy. The work is based on the synthesis and characterization of semiconductors based on W-BiVO4 and V2O5 until their characterization, later forms of deposition and the viability of an extra layer of W-BiVO4 are tested to delay the corrosion effect and increase the efficiency of the complete cell. In addition, the electrolyte solutions used have not yet been reported in further work.