Encapsulants are used primarily to protect, preserve the solar cells and keeps the glass, solar cells and the back sheet integrated. This white paper on Encapsulant highlights the following:
Importance of Encapsulant as encapsulant degradation is a prime cause for module degradation.
Polyolefins (PO), a new encapsulant type reduces module degradation significantly and improve durability of the modules.
Ethylene Vinyl Acetate (EVA), the most commonly used encapsulant has a limitation that it produces Acetic Acid when exposed to heat & pressure and leads to module degradation.