Encapsulant polymer blend films for bifacial heterojunction photovoltaic modules: Formulation, characterization and durability

In this work, polymer blends based on ethylene vinyl acetate (EVA) and polyolefin (PO) at different weight ratios, also in the presence of a crosslinking agent (CA) stabilizers (STAB), were investigated as potential encapsulants for PV modules. The EVA/PO processed by melt mixing then subjected to compression moulding following industrial lamination processing conditions. films characterized mechanical tensile tests thermogravimetric analysis, obtained results highlight beneficial effect PO low amounts behaviour thermal resistance high temperatures (>300°C). All UVB exposure, photoaging extent was monitored FTIR UV-visible spectroscopies. Therefore, EVA-rich can be considered good candidates module encapsulants, given compromise before after photoaging.