Patent ID: 8362353

Claim:
A photovoltaic module comprising a back sheet, a front sheet, a layer comprising a plurality of photovoltaic cells disposed between the front sheet and the back sheet, conductive pathways disposed to combine the electrical output of the plurality of photovoltaic cells into an electrical output from the module; and, an electrical output disposed to interconnect the module with other modules to form a photovoltaic array, or with an external electrical load; the back sheet, front sheet, and layer of photovoltaic cells being laminated together; and wherein the front sheet comprises a glass sheet having a front surface, a multi-layer fluoropolymeric film disposed on the front surface, and an adhesive layer disposed between the front surface and the multi-layer fluoropolymeric film, the multi-layer fluoropolymeric film comprising a first fluoropolymeric layer having a refractive index of 1.45 to 1.50 and a thickness greater than about 10 micrometers, the first fluoropolymeric layer comprising a first fluoropolymer; and a second fluoropolymeric layer having a refractive index of 1.33 to 1.37 and a thickness of 100 to 150 nanometers, the second fluoropolymeric layer comprising a second fluoropolymer; with the proviso that the reflectance spectrum of the multi-layer fluoropolymeric film exhibits at least one minimum in the wavelength between 400 and 1100 nm.