Highest Efficiency Polycrystalline Solar Cells with Stable Performance
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 5000 pc
- Supply Capability:
- 9000000 pc/month
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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
Solar Panel Images:
FAQ
We have organized several common questions for our clients,may help you sincerely:
①What price for each watt?
It depends on the efficiency of the solar cell, quantity, delivery date and payment terms.
②How 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.
③Can 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.
④What 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
• ⑤How 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.
⑥ 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.
- Q: What is the role of junction boxes in solar cell systems?
- Junction boxes in solar cell systems serve as important components that provide electrical connections and protection for the wiring and components within the system. They are responsible for housing the electrical connections between solar panels, inverters, and other electrical devices, ensuring proper flow and distribution of electricity. Additionally, junction boxes help regulate the temperature and prevent moisture or debris from entering the system, ensuring the safety and efficiency of the solar cell system.
- Q: Can solar cells be used for indoor applications?
- Yes, solar cells can be used for indoor applications. However, their efficiency is significantly reduced compared to outdoor use due to limited access to direct sunlight. Indoor solar cells can still generate electricity from artificial light sources, but they are typically less productive and may require additional lighting to optimize their performance.
- Q: What do the solar cell suppliers provide once we purchase the order from the solar cells from them.
- Some of the solar cells suppliers will also provide the construction of the solar cells for your project.
- Q: Can solar cells be used for powering submarines?
- Yes, solar cells can be used for powering submarines to some extent. However, due to limitations in surface area and the amount of sunlight that can penetrate the water, solar power alone is not sufficient to power submarines for long durations or at great depths. Submarines typically rely on a combination of diesel-electric engines and rechargeable batteries for propulsion and power generation.
- Q: Can solar cells be installed on sloped surfaces?
- Yes, solar cells can be installed on sloped surfaces. In fact, sloped surfaces can often be advantageous for solar panel installation as they allow for better sun exposure and increased energy generation.
- Q: How long do solar cells last?
- Solar cells typically last for about 25 to 30 years. However, with proper maintenance and care, they can continue to function effectively for even longer periods of time.
- Q: Can solar cells be used for powering desalination plants?
- Yes, solar cells can be used for powering desalination plants. Solar energy can be harnessed through photovoltaic panels, which convert sunlight into electricity. This electricity can then be used to power the desalination process, where saltwater is converted into freshwater through various methods such as reverse osmosis or distillation. Utilizing solar cells for powering desalination plants offers a sustainable and renewable energy source, reducing reliance on fossil fuels and minimizing the environmental impact of the desalination process.
- Q: How efficient are solar cells?
- Solar cells are highly efficient at converting sunlight into electricity, with the average efficiency of commercial solar panels ranging from 15% to 20%. However, advancements in technology have led to the development of more efficient solar cells, such as multi-junction cells, which can achieve efficiencies of over 40%.
- Q: How are solar cells installed on rooftops?
- Solar cells are typically installed on rooftops through a process that involves assessing the roof's suitability, preparing the surface, mounting the solar panels, connecting them to the electrical system, and ensuring proper wiring and grounding for optimal performance.
- Q: How do solar cells handle lightning strikes or electrical surges?
- Solar cells are designed to handle lightning strikes or electrical surges by incorporating protective measures into their design. These measures often include surge protection devices, such as varistors or lightning arrestors, which divert excessive electrical energy away from the solar cells and into a grounding system. This helps to prevent damage to the cells and the overall solar system, ensuring their safe operation even during such events.
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Highest Efficiency Polycrystalline Solar Cells with Stable Performance
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 5000 pc
- Supply Capability:
- 9000000 pc/month
OKorder Service Pledge
OKorder Financial Service
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