There is no difference between monocrystalline and polycrystalline in terms of battery panels and usage. But there are differences in the efficiency of photoelectric production and conversion.
The raw material used in monocrystalline solar cells is monocrystalline silicon. The surface is mainly blue-black or black and the crystal structure is not visible. The raw material used in polycrystalline solar cells is polycrystalline silicon. The surface is mainly blue in different shades, with crystal structures of different sizes and shapes, and the crystallization directions are also inconsistent. These are only visible when looking from a distance, apart from a slight color difference no difference is visible.
In terms of photoelectric conversion efficiency, the photoelectric conversion efficiency of monocrystalline silicon cellsis around 20 to 22%, or even more. The conversion efficiency of polycrystalline silicon cells is between 16% and 17%, with the highest being only about 18%. The higher the conversion rate, the more electricity emitted.
Monocrystalline silicon is first produced from polycrystalline silicon, and then processed into polycrystalline silicon in a monocrystalline furnace. Therefore, the production cost of monocrystalline silicon cells is higher than that of polycrystalline silicon, and the battery price is also higher. .
The following is a polycrystalline solar panel. Crystal structures with different orientations can be observed.
The following is a monocrystalline solar panel. The color is dark and the crystal structure is not visible.
Okay, polysilicon. 1. Monocrystalline silicon Polycrystalline silicon is a raw material used to makes solar panels. 2. Silicon is an extremely abundant element on earth. It is present almost everywhere and can be considered inexhaustible. There is no shortage of raw materials for manufacturing silicon-based solar cells. 3. The speed of polycrystalline silicon solar panels is generally two to three times that of monocrystalline silicon, and the voltage should be stable. 4. The manufacturing process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells, and the photoelectric conversion efficiency is about 12%, which is slightly lower than that of monocrystalline silicon solar cells. . However, the manufacturing of the material is simple and convenient, consumes less energy, and the total production cost is low, so it has been greatly developed.
Single crystal has a high conversion efficiency and is expensive; polycrystallinehas a low conversion efficiency and is cheap.
There are many polycrystals in the domestic market, or they are all polycrystals.
The Japanese market is very popular recently, but Japan's requirements are very high and they are all monocrystalline. People's idea of Japan is to do your best and do it right the first time. It has very high requirements for mitigation effectiveness, and we need to learn from that at home.