Abstract: A new-generation photovoltaic flexible film offering high efficiency results from the combination of an ultra-thin and very flexible photovoltaic film with a very thin, antireflection, prismatic film absorbing energy from solar radiation and righting the angle of the solar rays is provided. The process of the invention allows encasement of the photovoltaic modules and the prismatic film by an assembly of flexible polymer thermoplastic thin films and resinless thermofusion in vacuo.