China Polycrystalline Silicon Solar Cells with High Efficiency and Stable Performance

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Product Description:

 

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. 

Applications of Polycrystalline Solar Cells

Assemblies of photovoltaic cells are used to make solar modules which generate electrical power from sunlight, as distinguished from a "solar module" or "solar panel". A solar array generates solar power using solar energy.

 

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.

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 Silicon  Solar Cells with High Efficiency and Stable Performance

 

Solar Panel Images:


China Polycrystalline Silicon  Solar Cells with High Efficiency and Stable Performance

China Polycrystalline Silicon  Solar Cells with High Efficiency and Stable Performance

 

China Polycrystalline Silicon  Solar Cells with High Efficiency and Stable Performance

 

China Polycrystalline Silicon  Solar Cells with High Efficiency and Stable Performance

 

 China Polycrystalline Silicon  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.

 

Points to note when buy solar cells

Since the input of solar energy photovoltaic power generation system is unstable, it is generally required to configure the battery system to work, and solar lighting is no exception which you must configure the battery to work. Generally three are lead-acid batteries, Ni-Cd batteries and Ni-H batteries; their capacity and system reliability selection directly affect the price of the system. Choice of battery capacity generally follow the following principles: First, to meet the night lighting under the premise, as far as possible the energy stored during the day and down the solar cell module, but also capable of storing electrical energy to meet the continuous rainy days night lighting needs. Battery capacity is too small cannot meet the needs of lighting at night; the battery capacity is too large, while the battery is always in the state of power loss, affecting battery life, while wastage.

Select dispensing form when buy solar cells

Currently, there are mainly two kind’s packages of solar cells: Epoxy and laminates. Lamination process ensures that the solar battery life is more than 25 years; though epoxy is beautiful, the solar battery life is only 1 to 2 years. Therefore, 1W power solar lawn below the small, in the absence of the high life requirements of the situation, you can use the dispensing package, there are provisions for the life of the solar light, it is recommended to use laminated package. Further, there is a dispensing package for silicone gel solar cells, the working life of that solar cell is said to be up to 10 years.

Select the power when buy solar cells

Output power WP we mean is the output power of the solar cell under the standard sunlight , 101 standard, radiation intensity 1000W / m2, the air quality of AM1.5, cell temperature 25 conditions, which is by the European Commission. This condition is probably the same conditions with the usual sunlight sunny around noon, which is not, as some people imagine that kind, as long as the sun will have a rated output power, even at night that the solar lamp can be used normally. That is to say, the solar cell output power is random, at different times, different locations, also a solar cell output power is different. When people buy solar lights, in between aesthetics and energy, most of them choose energy-saving.

 

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Q:Why are the poly Solar cell specifications is different from each other, they seem to have the different size of 125mm, 156mm, 152mm, is the 152mm's battery technology is higher than the other?
Most of the popular products in the market is 125mm or 156mm, because the 152mm is not really practically useful in the market.
Q:How many years should I spend in the solar cell industry to be a good solar cells sales person?
Experience matter, but not the years. As long as you are learning the solar cells knowledge everyday, you can be a good solar cells sales in just one year.
Q:How does solar cell technology apply to our daily life?
Through high technology we are using now, solar cell energy is used in our daily life, such as the hot water you are use everyday in taking a shower.
Q:Do you believe you can make a solar cell by using kitchenware?
As a scientist, I think it's possible.
Q:How can I calculate the cost of using solar cells if I put a fully-functional solar system in my house?
Oh gosh, that would a lot, are you really ready to see your bill?
Q:Does solar cell cost less than the other power generation technology?
It is proved that it costs much less than usual.
Q:How can I explain to my 10 year old daughter what solar cells are?
I had the same question from my son when he was 11 years old. All I did was I took him to the National Electricity museum, and it explains everything about solar cells.
Q:What should I know about the Crystalline silicon photovoltaic cells?
Crystalline silicon (c-Si) is the crystalline forms of silicon, either multicrystalline silicon (multi-Si) consisting of small crystals, or monocrystalline silicon (mono-Si), a continuous crystal. Crystalline silicon is the dominant semiconducting material used in photovoltaic technology for the production of solar cells.
Q:I bought a new poly solar cells, and the test result of the conversion efficiency is 16.8%, is it lower than usual?
If the solar cells have been used for over 5 years or more, the conversion efficiency may become lower.
Q:How can I buy the solar cells wholesale ?
The wholesale price for solar cell is based on your quantities of the solar cells you want to buy from the manufacturers. The more you order, the cheaper wholesale price you would get.

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