China Polycrystalline Solar Cells with High Efficiency and Stable Performance

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5000 pc
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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. 

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

 

Electrical Characteristic

Efficiency (%)           Pmpp (W)          Umpp (V)        Impp (A)           Voc (V)          Isc (A)      

  18.00%                    4.380                 0.538             8.141               0.634             8.740

  17.90%                    4.356                 0.538             8.097               0.634             8.725

   17.80%                    4.331                 0.537             8.065                0.633            8.710

   17.70%                    4.307                 0.536             8.035                0.632            8.695

   17.60%                    4.283                 0.535             8.006                0.631            8.680

   17.50%                    4.258                 0.534             7.974                0.630            8.665

  17.40%                    4.234                 0.533             7.944                0.629            8.650

  17.30%                    4.210                 0.532             7.914                0.628            8.635

   17.20%                    4.185                 0.531              7.88    --            0.627        -- 8.620

   17.10%                    4.161                 0.530              7.851                 0.626           8.605

   17.00%                    4.137                 0.529              7.820                0.625           8.590

 

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

China Polycrystalline Solar Cells with High Efficiency and Stable Performance

 

Solar Panel Images:

China Polycrystalline Solar Cells with High Efficiency and Stable Performance

China Polycrystalline Solar Cells with High Efficiency and Stable Performance

China Polycrystalline Solar Cells with High Efficiency and Stable Performance

 

China Polycrystalline Solar Cells with High Efficiency and Stable Performance

 

 

China Polycrystalline Solar Cells with High Efficiency and Stable Performance

 

 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.

 

 

New Achievement of Chinese solar cell research

Professor Xiong Yujie group from China Science and Technology University have designed a photoelectric conversion can be carried out and has a flexible solar cell mechanics in the near infrared region based on the widely used semiconductor silicon material, the use of hot electron injection method of metallic nanostructures. Most solar cells are for visible light absorption, accounting for 52% of the sunlight near-infrared light has not been used efficiently. To solve this problem, based on previous research group Xiong Yujie semiconductor - metal interface, creatively having a near-infrared light absorption properties of silver nano-chip with integrated silicon nanowires to build two different photovoltaic devices, the near infrared region photoelectric conversion characteristics are improved. In the near-infrared light, the silver nano-chip generated hot electrons can be injected directly into the silicon semiconductor, the band of the photoelectric conversion.

In addition, conventional solar cells must be processed into hard plate-like objects, which limit daily use. Lightweight and flexible devices, and can be folded, crimped, pasted on a surface, such as automotive glass, roof, clothes. Xiong Yujie group of commercial silicon nano process combined with silver nano-sheet near-infrared light absorption properties, to create a near-infrared solar cell having mechanical flexibility.

Experts said the work by nano-manufacturing and nano-synthesis two kinds of nano effective combination of technologies to achieve a broad spectrum of the light-absorbing composite structures design and the development of a simple and effective near-infrared flexible solar cell manufacturing method is expected to for the development of smart thermostat and wearable solar cells solar cells.

 

 

 

  

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Q:Is silicon-based solar cells and silicon-based thin-film solar cells the same?
General silicon-based solar cells refer to monocrystalline silicon and polycrystalline silicon solar cells, while silicon-based thin-film solar cells are similar to sunpower producing that type of battery that can be made into curved components.
Q:Whether the solar cell is light can produce electricity
Solar cells, also known as "solar chips" or "photovoltaic cells", is a direct use of solar photovoltaic power semiconductor thin film.
Q:Is solar cell technology very developed and v applied to life a lot?
Ever since scientists discovered the solar cell, it has been very much a part of our life.
Q:Can I buy solar cells easily online?
Maybe, but it takes time to deliver it to you.
Q:Is the Photovoltaic Cells cheap to buy?
Cost Of Photovoltaic Cell has dropped an amazing 99% since 1977, which is a historical statistic we can tell from the past 30 years. So I think the answer should be yes.
Q:What is the accurate explanation for the sun solar cell power system? How does it work?
Even though the sun solar cell power system is much more developed then before, its working process is still a bit complicated compared to the conventional power supply system.
Q:Can the solar powered cells really work better than the normal cells?
There is no doubt that the solar powered cells work better than the normal cells, the only disadvantage is the cost of making it.
Q:How can I buy the solar cells wholesale ?
You can send your bidding terms to many solar cell factories by email, and let them quote the price for you. You can decide which company that gives you the best wholesale price.
Q:Does the solar cell generate electricity in the absence of the sun, only in the case of strong lights or lasers? If you can achieve how much, and the same day?
Strong light or laser light containing more than the threshold of solar cells can stimulate the solar cell power generation, if it does not contain, can not make too much battery power generation.
Q:Where can I buy solar cells?
Never bought anything like that.

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