Polycrystallines solar module
Polycrystalline solar cells are made from a silicon block that is slowly cooled after melting. This creates numerous small crystals that join together to form a solid block. This block is then cut into thin slices called wafers. These wafers are specially doped to achieve the desired electrical properties.
Visually, polycrystalline solar modules are often recognizable by their bluish color. The surface has a characteristic, grainy structure that is created by the boundaries of the individual crystals.
Properties and advantages
- Inexpensive production: Polycrystalline solar modules are generally cheaper to produce than monocrystalline modules because the manufacturing process is less complex.
- High efficiency: Although they are slightly lower in efficiency than monocrystalline modules, polycrystalline modules still offer good efficiency and can convert a large amount of solar energy into electrical energy.
- Robustness: Polycrystalline solar modules are relatively robust and resistant to mechanical stress.
- Wide range of applications: Due to their good price-performance ratio, polycrystalline modules are often used in large photovoltaic systems, both on roofs and in Open space systems.
Disadvantages
- Lower efficiency compared to monocrystalline modules: The random orientation of the crystals leads to minor losses when converting sunlight into electrical energy.
Conclusion
Polycrystalline solar modules are a proven and cost-effective technology for generating solar energy. Their high availability and good properties make them a popular choice for many photovoltaic systems.
Keywords: Polycrystalline, Solar module, Photovoltaics, Silicon, Efficiency, Solar cell, Solar system, renewable energies

