Insights into the encapsulation process of photovoltaic modules: GC-MS analysis on the curing step of Poly (ethylene-co-vinyl acetate) (EVA) encapsulant

摘要: Appropriate encapsulation schemes are essential in protecting the active components of photovoltaic (PV) module against weathering and to ensure long term reliability. For crystalline cells, Poly (ethylene-co-vinyl acetate) (EVA) is most commonly used PV encapsulant. Additives like peroxides silanes formulated EVA encapsulants obtain desired properties, e.g. gel content value sufficient adhesion after process etc. The identification control volatile organic compounds (VOCs) released by polymeric encapsulant during important for understanding optimizing processes order enhance quality manufactured modules. Here we demonstrate how gas chromatography mass spectrometry (GC-MS) techniques can be help understand curing process, mainly identifying VOCs emanating from under effect temperature pressure. results provide chemical insights into which valuable further optimization manufacturing evaluation on its environmental impact.