Single crystal plate material characteristics
Monocrystalline silicon solar cells are currently developed as a kind of solar cell. Its composition and production process have been finalized, and its products have been widely used in space and ground facilities. This kind of solar cell uses high-purity single crystal silicon rod as raw material, and the purity requirement is 99.999%. The photoelectric conversion efficiency of single crystal silicon solar cells is about 15%, and the high is 24%. This is a high photoelectric conversion efficiency in current types of solar cells, but the production cost is so large that it cannot be widely and widely used. Use. Since monocrystalline silicon is generally encapsulated with tempered glass and waterproof resin, it is durable and has a service life of up to 15 years and up to 25 years.
Second, the characteristics of polycrystalline plate materials
The manufacturing process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower, and the photoelectric conversion efficiency is about 12%. In terms of production cost, it is more than a monocrystalline silicon solar cell, the material is simple to manufacture, the power consumption is saved, and the total production cost is low, so that a large amount of development has been obtained. In addition, the life of polycrystalline silicon solar cells is also shorter than that of monocrystalline silicon solar cells. In terms of performance and price ratio, monocrystalline silicon solar cells are slightly better.