Coated photovoltaic glass is a type of photovoltaic glass in which one or more layers of functional films are deposited on the surface of ultra-white rolled or float glass through a special process. It is mainly used to increase light transmittance, reduce reflection, and enhance weather resistance, thereby significantly improving the power generation efficiency of solar modules.
1. Coating type
A. Anti-reflection coating
A. Sol-gel method: Apply solutions such as silica sol onto the glass surface, and after high-temperature curing, form a porous SiO₂ film.
b. Magnetron sputtering: In a vacuum environment, plasma is used to bombard the target material (such as SiO₂, TiO₂) to deposit and form a film.
B. Film Layer structure:
a single-layer film can reduce the reflectivity to 6% to 8%.
b. Multilayer films can be further reduced to 2% to 4% (the reflectivity of ordinary glass is approximately 8% to 10%).
2. Self-cleaning coating
A. Hydrophobic coating: Fluorine-containing compound coating, which makes the water contact Angle greater than 90°, creates A "lotus leaf effect", and dust is easily washed away by rain.
B. Photocatalytic coating: Decomposes organic dirt under the action of ultraviolet rays and achieves self-cleaning in combination with rainwater.
3. Multi-functional composite coating
AR+ self-cleaning + anti-PID three-in-one coating, suitable for high-efficiency components (such as HJT, TOPCon).
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