Effects of lamination condition on durability of PV module packaging and performance

Ten mini-modules of glass /encapsulant /backsheet structure were laminated under the condition of the same curing time and pressure, but different curing temperatures and aged in damp-heat accelerated ageing test in order to investigate the effect of temperature on the durability of PV module packaging and performance. Results show that the mini-modules using EVA as encapsulant were affected more by the laminating temperature compared to the mini-modules using modified ionomer. For EVA modules, samples with relatively low curing temperatures at 135-140ºC appeared to have higher adhesion between EVA and glass, lower moisture permeability into module and better dielectric of cells than those with high curing temperatures.