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2024
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01
Solar panel power generation efficiency
The photoelectric conversion efficiency of monocrystalline silicon solar energy is up to 24%, which is the highest among all kinds of solar cells. However, the production cost of monocrystalline silicon solar cells is too high to be widely and widely used. In terms of production cost, polycrystalline silicon solar cells are cheaper than monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is significantly reduced. In addition, the service life of polycrystalline silicon solar cells is shorter than that of monocrystalline silicon solar cells. Therefore, monocrystalline silicon solar cells are slightly better in terms of performance and price.
Researchers have found that some compound semiconductor materials are suitable for use as solar photovoltaic conversion films. For example, CdS, CdTe; Group III-V compound semiconductors: GaAs, AIPInP, and the like; thin film solar cells made of these semiconductors exhibit excellent photoelectric conversion efficiency. Semiconductor materials with multiple graded band gaps can expand the range of the solar absorption spectrum, thereby improving the photoelectric conversion efficiency. So that a large number of practical applications of thin film solar cells show broad prospects. Among these multiple semiconductor materials, Cu(In,Ga)Se2 is an excellent solar light absorbing material. Based on it, thin-film solar cells with significantly higher photoelectric conversion efficiency than silicon can be designed, achieving a photoelectric conversion rate of 18%
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