Solar Panel Power Generation Efficiency

The photoelectric conversion efficiency of monocrystalline silicon solar energy reaches the highest of 24%, which is the highest among all types of solar cells. However, the production cost of monocrystalline silicon solar cells is so high that they cannot 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 also shorter than monocrystalline silicon solar cells. Therefore, in terms of performance and price, monocrystalline silicon solar cells are slightly better.
Researchers have found that some compound semiconductor materials are suitable for use as solar photovoltaic conversion films. For example, CdS, CdTe; III-V compound semiconductor: GaAs, AIPInP, etc; Thin film solar cells made from these semiconductors exhibit excellent photoelectric conversion efficiency. Semiconductor materials with multiple gradient band gaps can expand the range of solar energy absorption spectrum, thereby improving photoelectric conversion efficiency. So that a large number of practical applications of thin film solar cells show broad prospects. Among these multicomponent semiconductor materials, Cu (In, Ga) Se2 is a solar light absorbing material with excellent performance. 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%