A multilayer back electrode for a photovoltaic thin film solar cell, the use of the multilayer back electrode for the production of thin film solar cells and modules, photovoltaic thin film solar cells and modules containing the multilayer back electrode, and a method of manufacturing photovoltaic thin film solar cells and modules

摘要

The present invention relates to a multilayer back electrode for a thin-film photovoltaic solar cell, comprising, in this order, at least one bulk back electrode layer containing or consisting essentially of V, Mn, Cr, Mo, Co, Zr, Ta, Nb and / or W and / or containing or consisting essentially of alloys containing V, Mn, Cr, Mo, Co, Zr, Fe, Ni, Al, Ta, Nb and / or W; at least one conductive barrier layer, at least one, in particular ohmic, contact layer, comprising or consisting essentially of Mo, W, Ta, Nb, Zr and / or Co, in particular Mo and / or W, and / or containing or substantially at least a metal chalcogenide, and / or containing at least one first layer, adjacent to the barrier layer, containing or consisting essentially of Mo, W, Ta, Nb, Zr and / or Co, in particular Mo and / or W, and at least one second layer, not adjacent thereto to the barrier layer, containing or essentially of at least one metal chalcogenide. The invention furthermore relates to the use of this multilayer back electrode for the production of thin-film solar cells and thin-film solar modules, photovoltaic thin-film solar cells and modules comprising the multilayer back electrode according to the invention and to a method for producing thin-film photovoltaic solar cells and modules.