Thermal cycling (TC) of 2 × 2 laminates: comparison graphs (center) between degradation in glass-glass laminates (top), versus glassless laminates (center, dotted lines represent samples with only encapsulant, so no cover material as glass or front- or backsheet) and GF-reinforced encapsulants (bottom, with and without cover material); picture of partial ribbon breakage as failure mechanism (right).