Solar panel is a kind of product that converts solar energy into electric energy. It is a kind of green energy. It is also a new product that is widely popular at present, such as water heater, bicycle, electric vehicle and so on. All of them are powered by solar panels. Then, what are solar panels? Xiaobian will sort it out for everyone!
(1) Polysilicon solar cell the production process of polysilicon solar cell is similar to that of monocrystalline silicon solar cell, but the photoelectric conversion efficiency of polysilicon solar cell is much lower, and its photoelectric conversion efficiency is about 12%. In terms of production cost, it is cheaper than monocrystalline silicon solar cells. It is easy to manufacture materials, saves power consumption, and has a low total production cost. Therefore, it has been greatly developed. In addition, the service life of polysilicon solar cells is shorter than that of monocrystalline silicon solar cells. In terms of performance price ratio, monocrystalline silicon solar cells are slightly better.
(2) Amorphous silicon solar cell amorphous silicon solar cell is a new type of thin-film solar cell that appeared in 1976. It is completely different from the manufacturing method of monocrystalline silicon and polycrystalline silicon solar cells. The process is greatly simplified, the consumption of silicon materials is small, and the power consumption is lower. Its main advantage is that it can generate electricity under weak light conditions. However, the main problem of amorphous silicon solar cells is the low photoelectric conversion efficiency, which is about 10% of the international advanced level, and is not stable enough. With the extension of time, its conversion efficiency declines.
(3) Monocrystalline silicon solar cell the photoelectric conversion efficiency of monocrystalline silicon solar cell is about 15%, and the highest is 24%, which is the highest among all kinds of solar cells, but the production cost is relatively high. Because monocrystalline silicon is generally packaged with tempered glass and waterproof resin, it is strong and durable, and its service life can generally reach 15 years, and the high can reach 25 years.
(4) Multicomponent compound solar cell multicomponent compound solar cell refers to a solar cell that is not made of a single element semiconductor material. There are many kinds of research in various countries, and most of them have not been industrialized. Semiconductor materials with multiple gradient band gaps (the energy level difference between conduction band and valence band) can expand the range of solar energy absorption spectrum and improve the photoelectric conversion efficiency. Based on it, thin-film solar cells with significantly higher photoelectric conversion efficiency than silicon thin-film solar cells can be designed.