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The differences between mono-crystalline and poly-crystalline

  • 2022-02-18 17:36:54

At present, PV modules are mainly made of mono-crystalline silicon wafers and poly-crystalline silicon wafers, so should I choose mono-crystalline or poly-crystalline silicon? What is the difference between them?

1.Appearance

From the appearance of the above, the four corners of the mono-crystalline silicon cells show a rounded shape, no pattern on the surface. While the four corners of poly-crystalline silicon cells show square corners, the surface has a pattern similar to the ice flower.


(Mono-crystalline)


2.Use

For users, there is no big difference between mono-crystalline and poly-crystalline silicon cells, their life and stability are very good. The average conversion efficiency of mono-crystalline silicon cells is higher than that of poly-crystalline silicon, but the current price is also higher than that of poly-crystalline.

3.Manufacturing process

poly-crystalline cells than mono-crystalline cells less production process steps, so the manufacturing process of poly-crystalline solar cells consume slightly less energy than mono-crystalline solar cells, but mono-crystalline modules generate more power, a comprehensive calculation of the energy consumption than the difference is not significant.

mono-crystalline photovoltaic modules and poly-crystalline photovoltaic module comparison:

(1)look at the history, mono-crystalline photovoltaic panels applied earlier than poly-crystalline photovoltaic panels.

(2)look at the dosage, poly-crystalline silicon in the power station is much higher than the application of mono-crystalline silicon, mono-crystalline silicon accounted for 30%, poly-crystalline silicon accounted for 70%.

(3)look at the appearance, mono-crystalline silicon dark blue, almost all black solar Panel, poly-crystalline silicon sky blue, bright colors, mono-crystalline cells rounded corners, poly-crystalline cells square.

(4)look at the conversion rate, mono-crystalline efficiency is higher than poly-crystalline, about 15%-25%.


(Poly-crystalline)


(5)look at the cost, mono-crystalline cost slightly more expensive than poly-crystalline, different manufacturers cost different, the market price of a watt high five cents to 10 cents.

(6)look at the attenuation of the actual data show that mono-crystalline and poly-crystalline have a lot of advantages, can not be identified from a single crystal, poly-crystalline angle attenuation fast and slow. Relatively speaking, the quality of the product (sealing degree, the presence of magazines, whether the hidden crack), the attenuation of greater impact.

(7)look at the cost performance, at present, poly-crystalline cost performance is slightly higher than mono-crystalline, just for now, with the mono-crystalline module cost reduction, in a few years the reversal may occur.

In the future, mono-crystalline silicon photovoltaic modules and poly-crystalline silicon photovoltaic modules, who has a lower overall cost and better cost performance, who will account for a larger share. As long as the actual situation to analyze the specific solar panel system materials, mono-crystalline silicon debate is actually benevolent, the wisdom of the wise, as long as the quality is reliable, the system is stable, which is no problem to choose.


FOTOVO solar has become synonymous with high performing, top quality photovoltaic modules and specializes in PV technology innovation, application and system development. The company is a key component supplier,system integrator and project developer..

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