Abstract: The invention pertains to a process for manufacturing a solar cell foil comprising the steps of: providing an etchable temporary substrate applying a front electrode of a transparent conductive oxide (TCO) onto the temporary substrate applying a photovoltaic layer onto the TCO layer applying a back electrode layer applying a permanent carrier ensuring that the front electrode and the back electrode are electrically connected in an interconnect to establish a series connection, the front and the back electrode each being interrupted by front and back groove, respectively, at different sides of the interconnect in any one of the preceding steps providing an etch resist on the non-TCO side of the temporary substrate at least at the location of the interconnect, and at least not at the entire location of the front groove selectively removing the temporary substrate where it is not covered with etch resist.