Will the tempering or semi-tempered treatment of the Photovoltaic Module Backsheet Glass affect its light transmittance and thermal stability?

The tempering or semi-tempered treatment of the Photovoltaic Module Backsheet Glass will indeed have a certain impact on its light transmittance and thermal stability, but in general, these effects can be effectively controlled during the design and manufacturing process to meet the requirements of the photovoltaic system. Performance requirements.
Tempering treatment is a process of converting ordinary glass into tempered glass through a specific process. It generally includes heating, cooling and other steps to form compressive stress on the surface of the glass and tensile stress inside, thereby improving the strength and impact resistance of the glass. This treatment process has little impact on the light transmittance of the glass, because tempering mainly changes the internal stress distribution of the glass rather than its optical properties. Therefore, tempered photovoltaic glass can still maintain a high light transmittance, ensuring that in terms of thermal stability, tempering treatment can significantly improve the temperature resistance of the glass. Ordinary glass may crack due to internal stress imbalance when it experiences drastic temperature changes. Due to its uniform distribution of internal stress, tempered glass can better resist temperature shock, thus improving the thermal stability of photovoltaic modules.
Semi-tempered glass is annealed glass that undergoes high temperature and quenching treatment to form a compressive stress of less than 69 MPa on the surface, thereby improving the mechanical strength of the glass. Compared with tempered glass, the light transmittance of semi-tempered glass also remains good, because the semi-tempered treatment also does not change the basic optical properties of the glass. At the same time, semi-tempered glass also has a certain degree of thermal stability and can withstand a certain degree of temperature change.
Although the strength of semi-tempered glass is higher than that of ordinary glass, it is lower than that of tempered glass. In addition, semi-tempered glass may form larger fragments and radial cracks when broken. Although these fragments usually do not have sharp edges, they still need to be handled with care to avoid injury.
The tempered or semi-tempered treatment of the Photovoltaic Module Backsheet Glass not only enhances the strength and impact resistance of the glass, but has little impact on its light transmittance and thermal stability. Through reasonable design and manufacturing processes, it can be ensured that tempered or semi-tempered photovoltaic glass can still meet the performance requirements of the photovoltaic system. Therefore, when selecting photovoltaic module backplane glass, the appropriate glass type and surface treatment process can be selected based on specific application scenarios and needs.