Polycrystalline Solar Cells A GRADE 3BB 156*156mm with Low Price

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Polycrystalline Silicon Solar Cells:

Solar cells is made by solar wafer, it has three categories of solar cell right now, monocrystalline polycrystalline and thin film,These cells are entirely based around the concept of ap-n junction, which is the critical part of solar module, it is the part that can convert the light energy into electricity, the thickness is from 180um to 200um, with even busbars to conduct electricity, textured cell can decrease diffuse reflection; they are often electrically connected and encapsulated as a module. Photovoltaic modules often have a sheet of glass on the front (sun up) side, allowing light to pass while protecting  semiconductor wafers from abrasion and impact due to wind-driven debris, rain, hail, etc. Solar cells are also usually connected in series in modules, creating an additive voltage. Connecting cells in parallel will yield a higher current;With high quality and stable quality. Our Cells can greatly improve the performance of Solar Modules.

Polycrystalline Silicon Solar Cells Advantage:

•  High efficiency and stable performance in photovoltaic conversion.
•  Advanced diffusion technique ensuring the homogeneity of energy conversion efficiency of the cell.
•  Advanced PECVD film forming, providing a dark blue silicon nitride anti-reflection film of homogenous color and  attractive appearance.
•  High quality metal paste for back surface and electrode, ensuring good conductivity, high pulling strength and ease of soldering.
•  High precision patterning using screen printing, ensuring accurate busbar location for ease with automatic soldering a laser cutting. 

Physical characteristics 

Dimension: 156*156mm±0.5mm

Thickness:  wafer(si): 200μm±20μm

                      Cell: 240μm±40μm

Front: silver bus bars;dark blue/others silicon nitride anti reflection coating

Back: silver/aluminum bus bars;full-surface aluminum BSF

Specification:

Mechanical data and design

  Format          -       156 mm × 156 mm ± 0.5 mm  

Thickness-       -       200 μm ± 20 μm

Front (-)               1.4 mm bus bars (silver),blue anti-reflection coating (silicon nitride)

Back (+)           -     2 mm wide soldering pads (silver) back surface field (aluminium)

Temperature Coefficient of Cells

Voc. Temp .coef.%/K                 -0.364%/K   

Isc . Temp .coef.%/K                 +0.077%/K

Pm. Temp. coef.%/K                 -0.368%/K

 

Efficiency code

Efficiency(%)

Pmax(w)

Impp(A)

Vmpp(V)

Isc(A)

Voc(V)

182

≥18.20

4.43

8.26

0.536

8.71

0.634

180

18.0-18.2

4.38

8.22

0.533

8.68

0.632

178

17.8-18.0

4.33

8.17

0.530

8.63

0.630

176

17.6-17.8

4.28

8.12

0.527

8.60

0.627

174

17.4-17.6

4.23

8.08

0.524

8.56

0.625

172

17.2-17.4

4.19

8.05

0.521

8.53

0.622

170

17.0-17.2

4.14

7.99

0.518

8.49

0.620

168

16.8-17.0

4.09

7.94

0.515

8.45

0.618


Intensity Dependence

Intensity [W/m2]      Isc× [mA]          Voc× [mV]           Pmpp

1000                         1.00                    1.000                 1.00

900                           0.90                    1.000                 0.90

800                           0.80                    0.99                   0.80

500                           0.50                    0.96                   0.49

300                           0.30                    0.93                   0.29

200                           0.20                    0.92                   0.19

 

IV Curve

Polycrystalline Solar Cells A GRADE 3BB 156*156mm with Low Price

 

Solar Panel Images:

Polycrystalline Solar Cells A GRADE 3BB 156*156mm with Low Price


Polycrystalline Solar Cells A GRADE 3BB 156*156mm with Low Price

 

Packaging & Delivery of Polycrystalline Solar Cells

Carton Box Package and Deliver by air. It should be noticed that it should be avoid of water, sunshine and moist.


FAQ

We have organized several common questions for our clientsmay help you sincerely

What price for each watt?

It depends on the efficiency of the solar cell, quantity, delivery date and payment terms.

How long can we receive the product after purchase?

In the purchase of product within three working days, We will arrange the factory delivery as soon as possible. The pecific time of receiving is related to the state and position of customers.Commonly 7 to 10 working days can be served.

Can you provide the peripheral products of the solar panels, such as the battery, controller, and inverter? If so, can you tell me how do they match each other?

Yes, we can, we have two companies for solar region, one is CNBM International, the other is CNBM engineering Co.

We can provide you not only the solar module but also the off grid solar system, we can also provide you service with on grid plant.

What is your warranty of solar cell?

 Our product can promise lower than 0.3% open box crack, we support claim after opening the box if it has crackm color difference or sth, the buyer should give pictures immediately, we can not accept the claim after the solar cell has assembled to solar panel.

• Timeliness of delivery

• How do you pack your products?

We have rich experience on how to pack the solar cell to make sure the safety on shipment, we could use wooden box or pallet as buyer's preference.

 Can you do OEM for us?

Yes, we can.

 

  

 

Solar power has been able respected, more and more widely used, in large part because it is environmentally friendly way of generating renewable power generation process does not produce carbon dioxide and other greenhouse gases, will not pollute the environment, and therefore widely. From the current terms of the types of solar cells, including crystalline silicon cells, thin film batteries and other battery materials. Monocrystalline silicon cells are divided into cells, polycrystalline cells and amorphous silicon thin-film batteries.

For solar cells, the most important parameter is the photoelectric conversion efficiency, developed in the laboratory of silicon-based solar cells, Monocrystalline silicon cell efficiency of 25.0%, polycrystalline silicon cell efficiency of 20.4%, CIGS thin-film cell efficiency of 19.6%, CdTe thin film cell efficiency of 16.7%, an amorphous silicon (amorphous silicon) thin film battery efficiency of 10.1%, while in practical application efficiency is slightly lower this level.

We are familiar with crystalline silicon cells into single crystal and polycrystalline, except that the silicon wafers. Monocrystalline wafers made of polysilicon raw material crystal pullers pull into a bar and then sliced into monocrystalline, polycrystalline silicon film is made of polysilicon through ingot casting furnaces made of polysilicon ingots and then sliced. Since the difference between the fabrications of polycrystalline silicon solar cell battery much. But the conversion rate, the current conversion rate of monocrystalline silicon cells generally 16% to 18% conversion rate of polycrystalline silicon cells generally 15% to 16%. From the comparison of production costs, polycrystalline silicon cells cheaper materials manufacturing simple, to save power consumption, lower overall production costs, get a lot of development. Therefore, polycrystalline silicon cells accounted for two-thirds of the amount of crystalline silicon cells, accounting for over 55% of the solar cell market share. However, although the cost of polysilicon occupies advantage, in addition to the conversion rate lower than the silicon, its service life is shorter than the Monocrystalline silicon solar cells.


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Q:What is the working principle of a solar cell?
A Solar cell works by using the sun's energy to enable electrons in semiconducting materials to move from orbits close to the nuclei of their atoms to higher orbits where they can conduct electricity.
Q:The working principle of solar cells includes the three processes
The opposite of the electrical symbol of the photogenerated carriers in the solar cell pn junction built under the action of the electric field, the electron-hole pairs are separated, the electrons are concentrated on one side, the holes are concentrated on the other side, and the opposite sex charges are generated on both sides of the pn junction Of the accumulation, resulting in photogenerated electromotive force, that is, photovoltaic voltage.
Q:How do people price solar cells? Is it based on a specific way of calculating the cost of solar cells?
The pricing of solar cells is based on it's material used to made it, the cost of building it and maintaining it. In fact, it doesn't cost much ever after every installation of solar cells system is done.
Q:How does solar cell technology apply to our daily life?
Solar cells are used to make solar modules which generate electrical power from sunlight,
Q:Is the Solar Power Photovoltaic Cells the same as PV cells modules?
According to the size and scale of the photovoltaic power station, the PV modules can be composed of various sizes and different arrays.
Q:My solar cells are broken, can I just buy one and replace it?
Trust me, you should hire a person who knows solar cells to help you.
Q:Many people said the usage of solar cell can reduce the cost overall, but does anyone agree with me that it actually cost a lot to operate a solar cell system?
Disagree, because you should see it in a different way.
Q:Where and how can we find the best solar cells suppliers?
I used to be a solar cells business dealer in the European market for over ten years, and I did not only use the internet to find the supplier, but also go to a lot solar cells industrial exhibition fairs.
Q:On the parallel connection of solar cells
Whether you say more than one solar cell is in series or parallel, it depends on your use requirements to decide if the parameters of solar cells are basically the same, and you need a relatively high "use" voltage, that can The battery in series, if you need a larger operating current and the voltage does not need high, you can connect multiple solar cells in parallel to get a higher output current;
Q:How do solar cells work to become the solar energy?
The solar cells need to work by converting a certain material into another useful energy. That's how we can utilize the solar energy into our life and factories.

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