VERTICAL ELECTROCHEMICAL CONTACTS OF PHOTOELECTROCHEMICAL CELLS WITH LOW VISUAL IMPACT

摘要

The present invention concerns a photovoltaic module comprising two overlapped panels (24', 24"), at least one of which being transparent or semitransparent, and each being constituted by a flat substrate (10) covered, on the side facing towards the other panel, by an electrically conductive coating (11) divided into a plurality of adjacent regions electrically insulated by means of a corresponding number of interruptions (12), among said panels (24', 24") a plurality of adjacent dye-sensitized solar cells being interposed, one per each electrically insulated region, each of the dye-sensitized solar cells being comprised of a photo- electrode (13), positioned on the conductive coating (11) of one of the two substrates (10), a counter-electrode (14), positioned on the conductive coating (11) of the other substrate (10), and a liquid electrolyte interposed between said photo-electrode (13) and said counter-electrode (14), wherein said adjacent dye-sensitized solar cells are connected in series by means of a corresponding plurality of vertical connections, connecting an electrically insulated region of the electrically conductive coating (11) of a substrate (10), in connection with a dye-sensitized solar cell, with the electrically insulated region of the electrically conductive coating (11) of the opposite substrate (10), in connection with an adjacent dye-sensitized solar cell, wherein said vertical connections are electrochemical connections, i.e. are constituted by an electrolyte solution with a redox shuttle.