A closer look at backsheet degradation in desert enviromnents

A Qatari research group has analyzed the performance of polyethylene terephthalate backsheets in real outdoor testing conditions in desert areas and has identified the main causes that lead to degradation. These include prolonged exposure to high ultraviolet radiation, high operating temperature cycling, and relative humidity. Researchers at the Hamad Bin Khalifa University (HBKU) in Qatar have conducted an assessment of the degradation of polyamide (PA) and polyethylene terephthalate (PET) backsheets used in PV modules installed in desert climates, where solar irradiance and ultraviolet (UV) ...

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