Photovoltaic glass is a kind of special glass used in solar cell modules, in which quartz sand is one of its main raw materials, so photovoltaic glass quartz sand needs to meet the following requirements:
High purity: photovoltaic glass quartz sand needs high purity to ensure the efficiency and performance of solar cells. Generally, the SiO2 content of quartz sand shall reach 99.99%.
High transparency: Photovoltaic glass needs to have high transparency to ensure the efficiency of solar cells in absorbing solar energy. Therefore, quartz sand needs to have high transmittance and transmissivity.
Low thermal expansion coefficient: since the solar cell module needs to work at high temperature, quartz sand needs to have a low coefficient of thermal expansion to ensure that the module will not have thermal stress fracture at high temperature.
Uniform particle size: photovoltaic glass quartz sand needs to have uniform particle size and particle distribution to ensure the surface flatness and transparency of solar cell modules.
Low water content: the water content of quartz sand needs to be controlled at a low level to ensure that the solar cell module will not suffer from efficiency reduction or damage caused by water vapor evaporation at high temperatures.
To sum up, photovoltaic glass quartz sand needs to be characterized by high purity, high transparency, low thermal expansion coefficient, uniform particle size and low water content.
