Think about Saiwei and Suntech, I am really emotional.
In addition, you can refer to the following information to find some related manufacturers.
(1) monocrystalline silicon solar cell
The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 15%, and the highest is 24%, which is the highest among all kinds of solar cells at present, but the manufacturing cost is too high to be widely used. Because monocrystalline silicon is generally encapsulated by tempered glass and waterproof resin, it is durable, and its service life can generally reach 15 years, and the highest can reach 25 years.
(2) Polycrystalline silicon solar cells
The manufacturing process of polysilicon solar cells is similar to that of monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polysilicon solar cells is much lower, and its photoelectric conversion efficiency is about 12% (the world's most efficient polysilicon solar cell 14.8% was listed in Sharp, Japan on July 1 2004). In terms of manufacturing cost, it is cheaper than monocrystalline silicon solar cells, with simple material manufacturing, electricity saving and lower total production cost, so it has been greatly developed. In addition, the service life of polycrystalline silicon solar cells is shorter than that of monocrystalline silicon solar cells. In terms of cost performance, monocrystalline silicon solar cells are slightly better.
(3) Amorphous silicon solar cells
Amorphous silicon solar cell is a new thin-film solar cell appearing in 1976. Its manufacturing method is completely different from monocrystalline silicon and polycrystalline silicon solar cells, which greatly simplifies the technological process, consumes less silicon materials and consumes less electricity. Its main advantage is that it can generate electricity in weak light. However, the main problem of amorphous silicon solar cells is the low photoelectric conversion efficiency. At present, the international advanced level 10% is not stable enough. As time goes on, its conversion efficiency decreases.
(4) Multi-element composite solar cell
Multicomponent solar cells refer to solar cells that are not made of single-element semiconductor materials. At present, there are many kinds of research in various countries, most of which have not been industrialized, mainly including the following: a) cadmium sulfide solar cells b) gallium arsenide solar cells c) copper indium selenium solar cells (new multi-element band gap gradient Cu(In, Ga)Se2 thin film solar cells).
Cu(In, Ga)Se2 is a kind of solar energy absorption material with excellent performance, and it is a multi-component semiconductor material with gradient band gap (energy level difference between conduction band and valence band), which can expand the solar energy absorption spectrum range and further improve the photoelectric conversion efficiency. On this basis, thin-film solar cells with higher photoelectric conversion efficiency than silicon thin-film solar cells can be designed. The achievable photoelectric conversion rate is 18%, and so far, this thin-film solar cell has not found the performance degradation effect (SWE) caused by light radiation, and its photoelectric conversion efficiency is about 50~75% higher than that of the current commercial thin-film solar panels, which is the highest level in the world.