What are the main materials of solar panels

The main material of solar panels is monocrystalline silicon or polycrystalline silicon wafers. The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 18%, with the highest reaching 24%. This is the highest photoelectric conversion efficiency among all types of solar cells, but the production cost is high, so it cannot be widely used yet. Due to the fact that monocrystalline silicon is generally packaged with tempered glass and waterproof resin, it is sturdy and durable, with a service life of up to 25 years.