This study, impedance spectroscopy technique was applied to measure impedance of five Ethylene Vinyl Acetate (EVA) samples cured with different combinations of parameters after curing and throughout a 950-hour damp heat test. Also, the electrical performance of six photovoltaic modules laminated with various combinations of parameters was characterized after fabrication and through a 950-hour damp heat test using a flash solar simulator. It was found that shunt resistance and power decreases with increasing lamination time and temperature. It was also found that module shunt resistance drops with increased damp heat exposure hours. This was also correlated to a decreased power output for some of the modules. Modules with higher lamination temperatures and durations generally performed worse than modules with less lamination temperatures and durations.
