Meier, R.R.MeierKraemer, F.F.KraemerWiese, S.S.WieseWolter, K.-J.K.-J.WolterBagdahn, J.J.Bagdahn2022-03-112022-03-112010https://publica.fraunhofer.de/handle/publica/37015510.1109/PVSC.2010.56142202-s2.0-78650106658Every temperature change induces stress between the module components due to the thermo-mechanical mismatch, which results in a displacement of solar cells in the module and therefore loads the solar cell interconnectors in between. As a result a limiting factor of solar module lifetime is the fatigue behaviour of these electrical cell interconnectors: the copper-ribbons. The purpose of this work is a quantitative estimation of the thermo-mechanical induced strain in the ribbons during service. For this purpose specially prepared solar cells were laminated to a solar module in an industrial process line and filmed during thermal cycling tests. Finally, the loading conditions on the ribbon were assessed by a previously developed lifetime model based on mechanical fatigue testing procedures.en621697conference paper