Due to the different pre-production processes of monocrystalline silicon cells and polycrystalline silicon cells produced by solar street light manufacturers, there are certain differences in their appearance and electrical performance. Distinguish between monocrystalline and polycrystalline appearance: monocrystalline silicon cells have four arc-shaped corners and no patterns on the surface; Polycrystalline silicon cells have square corners and ice flower-shaped patterns on the surface.
? Monocrystalline
? Polycrystalline
For users, there is not much difference between monocrystalline silicon cells and polycrystalline silicon cells. Monocrystalline silicon cells and polycrystalline silicon cells have very good lifespan and stability. Although the average conversion efficiency of monocrystalline silicon cells is about 1% higher than that of polycrystalline silicon cells, since monocrystalline silicon solar cells can only be made into a quasi-square shape (its four corners are arcs), when forming a solar cell module . There is some area that cannot be filled, but polycrystalline silicon solar cells are square and do not have this problem. Therefore, the efficiency of solar cell modules is almost the same. In addition, due to the different manufacturing processes of the two solar cell materials, the energy consumed in the manufacturing process of polycrystalline silicon solar cells is about 30% lower than that of monocrystalline silicon solar cells. Therefore, polycrystalline silicon solar cells account for a significant share. growing share of total global solar cell production. Large, manufacturing cost swill be much lower than that of monocrystalline silicon cells, so using polycrystalline silicon solar cells will be more energy efficient and more environmentally friendly.
Is monocrystalline or polycrystalline solar panel better?
Polycrystalline solar cells, that is, polycrystalline silicon solar cells , are mainly different from monocrystalline silicon solar cells. The differences are as follows:
1. Different characteristics
1. Polycrystalline silicon solar cells: Polycrystalline silicon solar cells have the high conversion efficiency and long life of monocrystalline silicon cells and the advantages. of thin-film amorphous silicon cells. The process of preparing the material is relatively simplified.
2. Monocrystalline silicon solar cells: p-texturing technologyMonocrystalline silicon wafers are an effective way to reduce light loss and improve cell efficiency; monocrystalline silicon solar cells are made of monocrystalline silicon rods with purity of up to 99.999%; Raw materials also increase the cost and are difficult to use on a large scale.
2. Different applications
1. Polycrystalline silicon solar cells: Combining solar power generation with building materials will make future large buildings self-sufficient in electricity, which is a major development direction in the field. the future ; Applications used in garden lights, street lights, portable lights, camping lights, mountaineering lights, fishing lights, black light lights, rubber tapping lights, energy saving lamps energy, etc.
2.Monocrystalline silicon solar cells: used in transportation; the fields of communications and communications; petroleum, ocean and meteorological fields; photovoltaic power plants; space Solar power plants, etc.
3. Different costs
In terms of production cost, polycrystalline silicon solar cells are inferior to monocrystalline silicon solar cells. The pool is cheaper, the materials are easy to manufacture, the power consumption is saved 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.
Baidu Encyclopedia - Polycrystalline silicon solar cells
Baidu Encyclopedia - Monocrystalline silicon solar cells
Solar panels monocrystallineui is better, polycrystalline solar panels?
Well, polycrystalline silicon. 1. Monocrystalline Silicon Polycrystalline silicon is a raw material used to make 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 manufacture of the material is simple and practicalEU, 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; polycrystalline has 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.
Personally, I think monocrystalline solar panels are better.
Monocrystalline silicon solar cells are currently the most rapidly developed type of solar cell. Its compositionand its 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 typically encapsulated in tempered glass and 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 solar cells.monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower, and its photoelectric conversion efficiency 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 better.
The difference between monocrystalline plate materials and polycrystalline plate materials
Polycrystalline silicon and monocrystalline silicon are two different substances. SiliconPolycrystalline is a commonly called chemical term. Glass, high purity polysilicon materialThat is, high purity glass and single crystal silicon are the raw materials for manufacturing photovoltaic solar cells, and they are also the materials for manufacturing semiconductor chips . Due to the scarcity of silicon ore raw materials for monocrystalline silicon production and the complex production process, the yield is low and the price is expensive.