Oxidation Impact of CIGS Photovoltaic Modules Performance after 10 Years of Operation

This paper analyzes the impact of the oxidation degradation on the CIGS solar modules performance and energy production. A series of tests performed in two laboratories, the SolarTechLAB of the Politecnico di Milano and the Kiwa Carnet Laboratory. Visual Inspection, Junction Box Analysis, Thermographic Analysis, I-V and P-V curves in Real Conditions, Energy Test, Maximum Power Determination and Electroluminescence Test for six CIGS photovoltaic (PV) modules were carried out. A power reduction up to 90% compared to the nominal power was observed.