Monocrystalline silicon photovoltaic cells
The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 15%, the highest reached 24%, which is the highest photoelectric conversion efficiency of all kinds of solar cells at present, but the manufacturing cost is so great that it can not be widely and Commonly used. As the single crystal silicon glass and waterproof resin are generally used for packaging, so its ruggedness, the service life of up to 15 years, up to 25 years.
Polycrystalline silicon photovoltaic cells
The production process of polycrystalline silicon solar cell is similar to that of monocrystalline silicon solar cell, but the photoelectric conversion efficiency of polycrystalline silicon solar cell should be reduced a lot, its photoelectric conversion efficiency is about 12%. Speaking from the production costs, monocrystalline silicon solar cells cheaper than some, material manufacturing is simple, saving power consumption, the total cost of production is low, so a lot of development. In addition, the service life of polycrystalline silicon solar cells is also shorter than monocrystalline silicon solar cells. In terms of cost performance, monocrystalline silicon solar cells are slightly better.
Amorphous silicon photovoltaic cells
Amorphous silicon solar cell is a new type of thin-film solar cell that appeared in 1976. It is totally different from single-crystal silicon and polycrystalline silicon solar cell. The process is greatly simplified, the consumption of silicon material is less, the power consumption is lower, and its main The advantage is that in low light conditions can also generate electricity. However, the main problem existing in amorphous silicon solar cells is that the photoelectric conversion efficiency is low, and the international advanced level is about 10%, which is not stable enough. As the time goes by, the conversion efficiency decays.
Multivariate compound photovoltaic cells
Multicomponent solar cells are solar cells that are not made from a single elemental semiconductor material. There are many kinds of studies in various countries and most of them have not yet been industrialized. The main ones are as follows:
a) CdS solar cells
b) Gallium arsenide solar cells
c) Copper indium selenium solar cells (novel multi-bandgap gradient Cu (In, Ga) Se2 thin film solar cells
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