The invention relates to photovoltaic thin-film solar modules, comprising in a first embodiment, particularly in the following order: at least one substrate layer; at least one rear
electrode layer, particularly directly contacting the substrate layer; at least one conductive
barrier layer, particularly directly contacting the rear
electrode layer and / or the substrate layer; at least one
contact layer, particularly an
ohmic contact layer, particularly directly contacting the
barrier layer; at least one
semiconductor absorber layer, particularly a
chalcopyrite or
kesterite semiconductor absorber layer, particularly directly contacting the
contact layer; optionally at least one first buffer layer, particularly directly contacting the
semiconductor absorber layer and containing or substantially made of CdS or a CdS-free layer, particularly containing or made substantially of Zn(S, OH) or In2S3; and / or optionally at least one second buffer layer, particularly directly contacting the semiconductor absorber layer or the first buffer layer and containing or substantially made of intrinsic
zinc oxide and / or high-resistance
zinc oxide; and at least one transparent front
electrode layer, particularly directly contacting the semiconductor absorber layer, the first buffer layer and / or the second buffer layer and particularly containing or substantially made of n-doped
zinc oxide. Said thin-film solar modules further comprise: spaced-apart first structuring separation trenches filled with at least one insulating material, said trenches separating adjacent solar cells from one another down to the substrate layer; spaced-apart second structuring separation trenches filled or provided with at least one conductive material, said trenches extending to the
contact layer or to the rear electrode layer or to the
barrier layer, particularly to the barrier layer and each being adjacent to a filled first structuring separation trench; spaced-apart third structuring separation trenches, which extend to the contact layer or to the rear electrode layer or to the barrier layer, particularly to the barrier layer, and are each adjacent to a second structuring trench on the other side of the first structuring trench to which the second structuring trench is adjacent; and at least one conductive bridge from second structuring trenches filled with a conductive material or furnished with such a material to the front electrode layer of the adjacent
solar cell, across adjacent first structuring separation trenches filled with insulating material. The invention further relates to a method for producing such thin-film solar modules.