The low-ion solar glass of the automatic template with robot allows 91% of the incident light to penetrate, and the solar glass penetration rate developed in recent years is 96%. Its power is 3.5% higher than standard solar glass. The back of the PV cell is an opaque material, and European manufacturers typically use a foil called TPT, made of multi-layer PVF (polyvinyl fluoride). Asian manufacturers tend to use metal oxides as backing materials. The back side is sometimes made of a usual hardened glass sheet. This two-sided transparent module is generally used as a glass-faced roof and a curtain wall for construction.
The automatic template with robot is a standard safety material for laminated glass. It used to be used in the photovoltaic industry, but it is unpopular because it will become blurred in water vapor. However, recent studies have shown that PVB has advantages in the manufacture of glass-glass (front-back) modules, and the new PVB foil has the same performance as EVA in maintaining transparency. Another advantage of PVB is that it can meet the requirements of building codes when used on glass-surfaced roofs and building-integrated curtain walls. However, when EVA is bonded to glass, the adhesion force is too weak to meet the standard requirements of the upper impact force.
PVB and other thermoplastic materials can be recycled for repackaging when the component is used up or damaged.