Solar cells which include the use of certain poly(vinyl butyral)/film bilayer encapsulant layers with a low blocking tendency and a simplified process to produce thereof

A process of manufacturing a solar cell laminate comprising:

• (i) providing an assembly comprising, from top to bottom, a front-sheet encapsulant layer, a solar cell layer comprising one or a plurality of electronically interconnected solar cells, and a back-sheet encapsulant layer, and (ii) laminating the assembly to form the solar cell module, wherein at least one of the two encapsulant layers is formed of a preformed bi-layer sheet consisting essentially of a first sub-layer of a poly(vinyl butyral) sheet and (B) a second sub-layer of a metal or polymeric film.