Silicon Wafer Solar Cell - 4w S Grade 156.75*156.75mm Polycrystalline Solar Cell

Silicon Wafer Solar Cell - 4w S Grade 156.75*156.75mm Polycrystalline Solar Cell System 1

Silicon Wafer Solar Cell - 4w S Grade 156.75*156.75mm Polycrystalline Solar Cell

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Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 100 watt

Supply Capability:: 10000 watt/month

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4W A Grade 156.75*156.75mm Polycrystalline Solar Cell

Solar Module Summarize

Solar Module is the core part of solar PV power systems,also is the highest value part of it. The function of Solor Module is to convert the sun's radiation to electrical energy, or transfer it to battery and store in it, or to drive the load running.
The Product has been widely used in space and ground, it mainly used for power generation systems, charging systems, road lighting and traffic signs areas. It could offer a wide range of power and voltage, and with high conversion efficiency, and long service life.

Main Characteristic

Long Service Life
High Efficiency Solar Cells
Special Aluminum Frame Design
High Transmission, Low Iron Tempered Glass
Advanced Cell Encapsulation

APPLICATIONS
Solar power stations
Rural electrification, Small home power systems
Power supply for traffic, security, gas industry
12V and 24V battery charging system
Other industrial and commercial application

Typical I-V curve

Product Show

4W S Grade 156.75*156.75mm Polycrystalline Solar Cell

Warranties

6Inch 2BB Polycrystalline Multi Solar Cells Mono Solar Cell

For c-Si panel: 25years output warranty for no less than 80% of performance, 10 years output warranty for no less than 90% of performance. Free from material and workmanship defects within 5 years.

For a-Si panel: 20 years output warranty for no less than 80% of performance, 10 years output warranty for no less than 90% of performance. Free from material and workmanship defects within 2 years.

Q: Begged monocrystalline silicon rod is to use what tools and equipment to cut into silicon. What are the most commonly used methods. Loss big? Thank you: General loss of about 40%, the general thickness of about 190um silicon, cutting seam in 120um

Q: What is the purpose of an encapsulant in a solar silicon wafer?: The purpose of an encapsulant in a solar silicon wafer is to protect the wafer from moisture, dust, and other environmental factors, ensuring its long-term durability and performance. It also helps to enhance the efficiency of the solar cell by minimizing reflection and providing a smooth surface for better light absorption.

Q: What is the impact of crystal orientation on solar silicon wafers?: The crystal orientation of solar silicon wafers has a significant impact on their electrical and optical properties. The orientation determines the arrangement and alignment of atoms in the crystal lattice, which affects the efficiency and performance of solar cells. For example, monocrystalline silicon wafers with a single crystal orientation (typically <100> or <111>) have higher electron mobility and lower defect density, resulting in better conductivity and higher conversion efficiency. These wafers are more expensive to produce but offer greater energy output. Polycrystalline silicon wafers, on the other hand, consist of multiple crystal orientations and have lower electron mobility and higher defect density. They are less expensive but have lower conversion efficiency compared to monocrystalline wafers. The crystal orientation also influences the behavior of light absorption and reflection within the solar cell. The alignment of crystal planes affects the optical properties of the wafer, determining its ability to capture and convert sunlight into electricity. In summary, the crystal orientation of solar silicon wafers directly impacts their electrical conductivity, conversion efficiency, and optical properties, ultimately influencing the overall performance and cost-effectiveness of solar cells.

Q: Can solar silicon wafers be used in solar-powered charging stations?: Yes, solar silicon wafers can be used in solar-powered charging stations. These wafers are a key component in producing solar cells, which convert sunlight into electricity. Solar-powered charging stations utilize solar cells to capture sunlight and convert it into electrical energy to charge various devices. Therefore, solar silicon wafers play a crucial role in the functioning of solar-powered charging stations.

Q: How are solar silicon wafers protected from moisture during storage?: Solar silicon wafers are typically protected from moisture during storage by encapsulating them in a protective packaging such as airtight bags or containers with desiccants. This helps to prevent any moisture from coming into contact with the wafers, which could potentially degrade their performance or cause damage.

Q: What is the role of the front contact on a solar silicon wafer?: The role of the front contact on a solar silicon wafer is to collect and transport the generated electricity from the sunlight absorbed by the solar cells. It acts as a conducting layer that allows the flow of electrons, enabling the conversion of solar energy into usable electrical energy. Additionally, the front contact also helps to protect the underlying layers of the solar cell from external elements and provides structural support to the wafer.

Q: Are there any environmental concerns associated with solar silicon wafers?: Yes, there are some environmental concerns associated with solar silicon wafers. The primary concern is the energy-intensive manufacturing process of silicon wafers, which requires a significant amount of electricity and raw materials. The production of silicon wafers also generates hazardous waste, including toxic chemicals and greenhouse gas emissions. Additionally, the mining of raw materials like quartz and silicon for the production of wafers can have negative environmental impacts, such as habitat destruction and water pollution. However, it is important to note that compared to other forms of energy generation, solar silicon wafers have relatively minimal environmental impacts over their lifecycle.

Q: What is the role of a back surface field in a solar silicon wafer?: The role of a back surface field in a solar silicon wafer is to enhance the efficiency of the solar cell by reducing the recombination of charge carriers at the back surface. This is achieved by creating a high dopant concentration layer at the back surface, which acts as a barrier to prevent the recombination of electrons and holes, thus improving the overall performance of the solar cell.

Q: What is the expected efficiency improvement for thin-film solar silicon wafers?: The expected efficiency improvement for thin-film solar silicon wafers varies depending on the specific technology and advancements being made. However, recent research and development efforts have shown promising results, with projected efficiency improvements ranging from 20% to 30%. It is important to note that these estimates are subject to further advancements and breakthroughs in the field.

Q: Can solar silicon wafers be used in portable solar devices?: Yes, solar silicon wafers can be used in portable solar devices. These wafers are commonly used in the production of solar cells, which are the primary component of solar panels. By incorporating solar silicon wafers into portable solar devices, such as solar-powered chargers or lights, these devices can harness sunlight to generate electricity and provide portable renewable energy solutions.

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