PV solar panel materials usually include glass, protective film, frame, and so on. Among them, tempered and non-tempered patterned glass and float glass will be used for glass.

In terms of appearance quality, the appearance quality of float glass for solar cells should meet the requirements of GB11614-qualified products. The general thickness is 3.2mm, and the light transmittance is over 91% in the wavelength range (320-1100nm) of the solar cell's spectral response. It is resistant to ultraviolet radiation and the light transmittance does not decrease. Components made of tempered glass can withstand the impact of a 25 mm diameter hockey puck at a speed of 23 m/s.

In terms of diagonal difference, the diagonal difference between tempered glass for solar cells shall not be greater than 0.1% of the average length of the two diagonals, and the diagonal difference of non-tempered glass for solar cells shall not be greater than 0.2% of the average length of the two diagonals.

The EVA film layer with a thickness of 0.35~0.5mm is often used as a sealant for solar cells and as a connecting agent with glass and TPT. Because it has high light transmittance and anti-aging ability. But now there are other types of interlayers, such as PVB films, which are also a good choice.