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Photovoltaic (PV) modules are environmentally energy conversion devices to generate electricity via photovoltaic effect of semiconductor from solar energy. One of key elements in PV modules is “backsheet,” a multilayered barrier film. A desirable backsheet should exhibit barrier properties. A representative backsheet materials is composed of polyvinyl fluoride (PVF) and poly(ethylene terephthalate) (PET). In this study, we utilize PET films with high crystallinity, instead of PVF. Since it is well known that PET is suffering from hydrolysis, it is needed to understand PET decomposition behavior. To evaluate their hydrolysis behavior, accelerated PET decomposition test protocols are used. Electro chemical PV module performances are investigated to prove the efficacy of hydrolyticall durable PET films selected via the screening process.
