High-transmittance photovoltaic glass and preparation method thereof

The invention relates to high-transmittance photovoltaic glass and a preparation method thereof, the high-transmittance photovoltaic glass comprises a glass substrate and an anti-reflection coating film plated on the surface of the glass substrate, and the anti-reflection coating film is obtained by coating and curing a composite nano coating; the composite nano coating comprises SiO2 dispersion liquid, a surfactant template and a water repellent agent, the preparation process of the SiO2 dispersion liquid comprises the following steps: mixing and stirring tetraethyl orthosilicate and ethanol, adding hydrochloric acid in the stirring process, adjusting the pH value to 4-5, standing and aging for 2-3 hours to obtain SiO2 wet sol, adding nano SiO2 into the SiO2 wet sol to obtain a SiO2 mixed system, and finally adding a solvent for dispersion to obtain the SiO2 dispersion liquid; the particle size range of the nano SiO2 is 80 to 100 nm. According to the invention, the transmittance of the photovoltaic glass can