The manufacturing process of 270w Polycrystalline Solar Panel china supplier is similar to that of monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower, and its photoelectric conversion efficiency is about 17-18%. The production of polycrystalline silicon wafers has low energy consumption and no pollution in the production process. Compared with monocrystalline silicon solar cells, polycrystalline silicon solar cells are more economical.
In terms of production cost, it is cheaper than monocrystalline silicon solar cells, the material is simple to manufacture, power consumption is saved, and the total production cost is lower, so it has been developed in a large amount. In addition, the service life of polycrystalline silicon solar cells is shorter than that of monocrystalline silicon solar cells.
The production of monocrystalline silicon solar cells needs to consume a large amount of high-purity silicon materials, and the manufacturing process of these materials is complicated, and the power consumption is very large, which has exceeded one-half of the total production cost of solar cells. In addition, the drawn monocrystalline silicon rods are cylindrical, and the solar cells made by slicing are also wafers, and the plane utilization rate of the solar modules is low. Therefore, since the 1980s, some countries in Europe and the United States have invested in the development of polysilicon solar cells. Due to the obvious crystal grain interface and lattice dislocation in polysilicon, its efficiency is still relatively low. There are also carrier mobility, lifetime and diffusion length. Compared with monocrystalline silicon solar cells, 270w Polycrystalline Solar Panel china supplier is much lower.
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