They all belong to crystalline silicon solar cells. The process of changing from liquid to solid requires first nucleation and then growth. This process is called nucleation and growth of crystal grains. The molecules and atoms of the grain are arranged regularly, a grain is therefore a single crystal.
Multiple crystal grains, each with different sizes and shapes, and the orientation is disordered, has no obvious shape, and does not show anisotropy. It is polycrystalline.
English grain is represented by Grain, please note that it is different from Particle.
To put it simply:
Polycrystalline refers to the coexistence of multiple crystal forms, while monocrystalline refers to a single crystal form.
Single crystal - the orientation of the lattice inside the crystal is exactly the same. Polycrystal - composed of numerous crystal grains
Personally, I think monocrystalline solar panels are. better.
Monocrystalline silicon solar cells are currently the most rapidly developed type of solar cell. Its composition and production process have been finalized, and its products have been widely used in space and ground facilities. This type of solar cell uses high-purity monocrystalline silicon rods as raw material, with a purity requirement of 99.999%. The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 15%, the highest reaching 24%.
It is the current type of solar cell with the highest photoelectric conversion efficiency, but the production cost is so high that it cannot be widely and commonly used in large quantities. Since monocrystalline silicon is usually encapsulated in tempered glassand a waterproof resin, it is strong and durable, with a lifespan of typically up to 15 years and up to 25 years.
The manufacturing process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower, and its conversion efficiency photoelectric is about 12%. In terms of production cost, it is lower than that of monocrystalline silicon solar cells. The material is easy to manufacture, saves energy, and the overall production cost is low, so it has been widely developed.
In addition, the lifespan of polycrystalline silicon solar cells is shorter than that of monocrystalline silicon solar cells. In terms of performance-price ratio, monocrystalline silicon solar cells are slightly betterres.
The difference between monocrystalline plate materials and polycrystalline plate materials
Polycrystalline silicon and monocrystalline silicon are two different substances. Polycrystalline silicon is a commonly called chemical term. Glass, a high-purity polycrystalline silicon material, is a high-purity glass, and monocrystalline silicon is the raw material for manufacturing photovoltaic solar cells, and it is also the material for manufacturing semiconductor chips due to the scarcity of silicon ore raw materials for the production of monocrystalline cells. silicon and complicated production process, production is low and expensive.