Why Solar Panel Glass Is Very Important？
Solar panel glass is one of the important barriers which protects solar photovoltaic cells against damaging external factors, such as water, vapor, and dirt.The solar panel glass also offers low reflection, high transmission, and high strength. In crystalline solar panels, a 3 to 4mm thick solar glass is often used.
The thicker the glass in the crystalline solar panels, the more stable are they. Solar panel glass on cheaper modules may be as thin as 2.5mm. The solar panel glass has a rough surface. This is necessary to make the EVA film bond well to the solar panel glass during the lamination process.
What properties are expected from solar panel glass?
1. Solar panel glass should ensure a high solar radiance transmittance.
An anti-reflective (AR) coating can be added to solar panel glass by plating one layer of anti-reflection film before the glass is tempered. The additional anti-reflective (AR) coating on the solar panel glass reduces the amount of reflected light and increases the percentage of absorbed sunlight from solar photovoltaic cells by 2.5%.
2.Solar panel glass should guarantee strength and safety.
Firstly, tempered glass is up to four times stronger than standard plate glass. Secondly, tempered glass is considered safe. When it breaks, it will shatter into small pieces reducing the probability of serious injury.Both the strength and safety are necessary for the installation of solar PV panels.
