US Patent 11984521 Combined encapsulant and backsheet for photovoltaic modules

A system including at least one photovoltaic module configured to be installed on a roof deck having an underlayment layer. The photovoltaic module includes at least one solar cell having a first side and a second side opposite the first side, an encapsulant layer juxtaposed with the first side of the solar cell, a glass layer juxtaposed with the encapsulant layer, and a encapsulant-backsheet layer juxtaposed with the second side of the solar cell. The encapsulant layer and the encapsulant-backsheet layer encapsulate the at least one solar cell. The system does not include an intervening layer between the encapsulant-backsheet layer and the underlayment layer.