Polycrystalline Solar Cells 2BB/3BB with Long-term Electrical Stability

Ref Price:
$0.18 - 0.33 / watt
Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
4200 watt
Supply Capability:
600000 watt/month

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Specifications of Poly Solar Cells 

Format 

156 mm × 156 mm ± 0.5 mm

Thickness-

210μm ± 40 μm

Front (-) 

1.5mm bus bars (silver),blue anti-reflection coating (silicon nitride)

Back (+)

2.5mm wide soldering pads (silver) back surface field (aluminium)    

                                   

Temperature Coefficient of Poly Cells

Voc.Temp .coef.%/K 

-0.351%/K 
Isc.Temp .coef.%/K+0.035%/K
Pm.Temp. coef.%/K-0.47%/K

 

Electrical Characteristic of Poly Cells 

Efficiency

Efficiency

Pmax(W)

Average 

Impp(A)

Vmpp(V)

Isc(A)

Voc(V)

1720

17.20~17.40

> 4.186

> 4.186

7.94

0.528

8.515

0.626

1700

17.00~17.20

4.137~4.186

4.161

7.905

0.525

8.482

0.624

1680

16.80~17.00

4.088~4.137

4.113

7.863

0.521

8.402

0.623

1660

16.60~16.80

4.040~4.088

4.064

7.825

0.519

8.358

0.622

1640

16.40~16.60

3.991~4.040

4.015

7.769

0.517

8.304

0.621

1620

16.20~16.40

3.942~3.991

3.967

7.713

0.514

8.248

0.619

1600

16.00~16.20

3.894~3.942

3.918

7.67

0.511

8.204

0.616

 

Advantages of Poly Solar Cells

1. High efficiency and High power.

2. Long-term electrical stability.

3. Lowest price and Fastest delivery.

4. Good quality and good service.

5. Bulk supply

6. Good Warranty

7. Big Sale

8. More than 25 years on the lifetime.

 

Usage and Applications of Poly Cells

Solar cells 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 the 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;our solar cells have passed IEC Certification.

With high quality and stable quality. Our Cells can greatly improve the performance of Solar Modules.

Packaging & Delivery of Poly Cells

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

 

Factory Picture of Poly Cells

Solar Cells

 

Package Picture of Poly Cells

Solar Cells

 

Solar Cells

 

 

Polycrystalline solar cells 2BB/3BB combines the high conversion efficiency monocrystalline silicon cells and preparation of amorphous silicon thin film materials as well as long-life battery, etc. relatively simplified new generation of batteries, the conversion efficiency is generally about 12%, slightly lower than the silicon solar cells, there is no obvious efficiency recession, and may be prepared on an inexpensive substrate material, the cost is much lower than silicon cells, and more efficient than amorphous silicon thin film batteries.
From the production cost, than monocrystalline silicon solar cells cheaper, simple materials, saving power consumption, lower overall production costs, and therefore get a lot of development. In addition, Polycrystalline solar cells 2BB/3BB battery life is also shorter than the single crystal silicon solar cells.
Monocrystalline silicon solar cell production requires large amounts of high-purity silicon material and manufacturing process complexity of these materials, power consumption is large, the total production cost of solar cells has over one-half. Coupled with cylindrical silicon rods drawn, sliced wafer production of solar cell is composed of low solar plane component. Therefore, since the 1980s, some European and American developed countries put Polycrystalline solar cells 2BB/3BB.
Has been the focus of a single crystal to polycrystalline direction, mainly due to; [1] can supply less and less solar cell material end to end; [2] in terms of solar cell, a square substrate is more cost-effective, and by casting method polysilicon direct solidification method can be directly obtained rectangular materials; the production process [3] polysilicon continue to make progress, automatic casting furnace each production cycle (50 hours) can produce over 200 kg ingots, grain size reaches cm level; [4] Since the last decade of research and development of single-crystal silicon technology quickly, which technology has also been applied to the production of polycrystalline silicon cells, such as selective etching the emitter, back surface field, corrosion suede, surface and bulk passivation , thin metal gate electrode, using screen printing technology allows the width of the gate electrode is reduced to 50 m, height of 15 m or more, rapid thermal annealing technology for polysilicon production process can significantly shorten the time, single-chip thermal process time can be less than a minute to complete, using the technology in the 100 cm2 polycrystalline silicon sheet made cell conversion efficiency over 14%. According to reports, the 50 to 60 micron substrate made of polysilicon cell efficiency of over 16%. The use of mechanical groove, screen printing technology in 100 square centimeters crystal efficiency more than 17%, no mechanical groove in the same area on the efficiency of 16%, using buried gate structure, mechanical groove in the 130 cm2 polycrystalline on the cell efficiency reached 15.8%.

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Q:Where and how can I find more information of Photovoltaic Cells Solar Panels? Can anybody share more about that?
Photovoltaic cells produce electricity directly from sunlight. Photovoltaic cells are also called PV cells or solar cells. Many PV cells are used in remote locations not connected to the electric grid. Photovoltaic cells comprise the main component in solar panels and are also used to power watches, calculators, solar lights, and lighted road signs.
Q:Is A grade better than the B grade when we buy the poly solar cells.
The quality of the poly solar cell is differentiated by grade, therefore, A grade is better than B grade.
Q:How many years should I spend in the solar cell industry to be a good solar cells sales person?
Personally, I think 4 years will be good enough to be a really good solar cells sales, and you can accumulate a lot of client based and resources.
Q:I studied very hard at school, but I just can not figure out how solar cells work, anybody can help me with that?
It's not a easy job.
Q:Where can I buy solar cells on sale but still good quality ?
There are many ways you can buy solar cells, online, like Amazon.com. Alibaba.com, or local agent who sells more than 10 brands of solar cells produced in different countries.
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:I bought a new poly solar cells, and the test result of the conversion efficiency is 16.8%, is it lower than usual?
Since you mentioned that your poly solar cells is a newly bought one, I strongly recommend you to ask your supplier.
Q:How does a solar cell raise industrial efficiency?
December 2014, the world record for solar cell efficiency at 46% was achieved.
Q:Are there any library or exhibition halls where I can show students at school how the solar cells works?
Sometimes there are some theme shows focused on solar cell technology in the National Science and technology Museum. You can take your students over there.
Q:How to get high voltage and high current output of solar cells?
Well, there is a scientific way which can help you to get the high current solar cells, but it can only be used in the experiment.
M-CELL is one of the leading international solar cells manufacturers and specialized in research & development, manufacturing and marketing of solar cells, module and photovoltaic power system made of mono and poly silicon. Our annual solar cells production capacity of the first workshop reaches 210MW.We’re in compliance with the principle that technology comes first and we will meet customers’ need with first-class products, superior service and continuous improvement.

1. Manufacturer Overview

Location Zhejiang, China
Year Established 2008
Annual Output Value Above US$ 320 Million
Main Markets Australia; Asia; South East Asia; South America; North America; Europe; Africa
Company Certifications ISO 9001:2008; CE; TUV; UL

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Ningbo, China
Export Percentage 45% - 50%
No.of Employees in Trade Department 200-300 People
Language Spoken: English; Chinese
b)Factory Information  
Factory Size: Above 10,000 Square meter
No. of Production Lines 8
Contract Manufacturing OEM Service Offered; Design Service Offered
Product Price Range Average