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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- Inquire about price/MOQ

Q:Which brand of the solar cells is sold with the lower price on the market? Which brand is more practical for the countryside?
Our price of the solar cell is low and very competitive in the market, but we can still guarantee you that we provide you the best quality.
Q:How to explain to students how the solar cells are made?
Purifying the silicon is the first step to make solar cells.
Q:What are the short-circuit currents of solar cells affected by the factors?
Silicon cell: the life of the minority after the diffusion, silicon impurity content, silicon chip resistivity, cashmere suede, PE anti-reflective film anti-reflective effect, the front gate line printing and so on affect the short-circuit current.
Q:We are currently promoting our one of our solar cells seriers, which is the 156mmx156mm 6inch,2BB/3BB polycrystalline/multi solar cells,mono solar cell,made in Taiwan/Germany, please feel free to contact me if any interest.
I am now in the process of purchasing some mono solar cells, can you send me more details of the product?
Q:Are bulk solar cells better than the normal solar cells?
Yes, the bulk solar cells are better than normal solar cells because its power supply is bigger than the normal solar cells.
Q:My solar cells are broken, can I just buy one and replace it?
No, you just can not do properly
Q:What are the applications of solar cells?
oil, marine, meteorological fields: oil pipelines and reservoir gates cathodic protection solar power systems, oil drilling platform life and emergency power, marine testing equipment, weather / hydrological observation equipment. (
Q:Is that true that the price of solar cells will be reduced in the coming year?
TrendForce, a professional survey firm based in Taiwan announced March 10th : because the global market demand for solar cells is declining it is very possible that the price of solar will eventually goes down.
Q:What should I know about the Crystalline silicon photovoltaic cells?
Crystalline silicon photovoltaic cells is the most early development of a solar cell. 1.leV, the band gap width of silicon, is an indirect migration type semiconductor, which is not the most suitable material for making solar cells.
Q:Silicon solar cell power generation principle
In the case of homogeneous semiconducting materials; one is at the interface of the semiconductor. Although there are some similarities between them, the specific mechanisms that produce these two effects are not the same. ], And the meaning of the photovoltaic effect is confined to the latter case.

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