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: How do solar silicon wafers perform in dusty and sandy environments?: Solar silicon wafers can perform well in dusty and sandy environments, although the presence of dust and sand can impact their performance to some extent. The accumulation of dust and sand particles on the surface of solar panels can reduce the amount of sunlight reaching the silicon wafers, resulting in lower energy production. To mitigate this, regular cleaning of the panels is necessary to maintain optimal performance. Additionally, advancements in panel design and coatings have been made to minimize the impact of dust and sand, ensuring better performance in such environments.

Q: The metal in the silicon wafer: The properties of silicon have excellent electrical properties. The band gap is moderate, and is 1.21 ev. Higher carrier mobility, the electron mobility is 1350 cm / sec / V /, hole mobility is 480 cm / sec / v. The resistivity at room temperature (300K) up to 2.3 x 10 - Europe - cm wide, doped resistivity can be controlled in 10 - to 10 - Europe - cm, can meet the needs of manufacturing various devices. The minority carrier lifetime of the single crystal silicon is longer than that in a few tens of microseconds to 1 milliseconds. Larger thermal conductivity. The chemical property is stable, and is easy to form a stable thermal oxidation film. It can be used to realize the surface passivation and protection of the PN junction in the fabrication of planar silicon devices, and the metal oxide semiconductor structure can be formed to produce MOS field effect transistors and integrated circuits. The properties of the PN junction has good characteristics, so that the silicon device has the advantages of high pressure, the reverse leakage current, high efficiency, long service life, good reliability, good heat conduction, and in the 200 - high temperature operation etc..

Q: What is the average weight of a solar silicon wafer?: The average weight of a solar silicon wafer is typically around 5 to 7 grams.

Q: How are solar silicon wafers affected by light-induced annealing?: Solar silicon wafers are positively affected by light-induced annealing. This process helps to reduce or eliminate the presence of defects and impurities in the silicon material, resulting in improved efficiency and performance of the solar cells. Additionally, light-induced annealing can enhance the electrical properties of the wafers, leading to better conversion of sunlight into electricity.

Q: How are solar silicon wafers affected by dust or dirt accumulation?: Solar silicon wafers are negatively affected by dust or dirt accumulation as it can reduce their efficiency in capturing sunlight. The accumulation of dust or dirt on the surface of the wafers creates a barrier that prevents sunlight from reaching the silicon, therefore reducing the amount of energy that can be converted into electricity. This accumulation can decrease the overall performance of solar panels and may require regular cleaning to maintain optimal efficiency.

Q: Can solar silicon wafers be used in mobile or portable solar chargers?: Yes, solar silicon wafers can be used in mobile or portable solar chargers. These wafers are commonly used in the production of solar cells, which convert sunlight into electricity. By integrating solar silicon wafers into portable chargers, they can harness solar energy and charge devices on the go.

Q: How are solar silicon wafers protected from humidity and moisture during manufacturing?: Solar silicon wafers are protected from humidity and moisture during manufacturing through various methods such as encapsulation, hermetic sealing, and the use of protective coatings. These measures help to prevent any potential damage or degradation of the wafers caused by exposure to moisture, ensuring their quality and performance in solar panel production.

Q: What is the typical lifetime energy yield of a solar silicon wafer?: The typical lifetime energy yield of a solar silicon wafer varies depending on various factors such as the efficiency of the solar cells, the geographical location, and the maintenance of the solar panel system. On average, a solar silicon wafer can generate enough energy to offset its initial embodied energy within 1-4 years. Over its lifetime, a solar silicon wafer can produce around 10-20 times more energy than was used in its manufacturing process.

Q: How do solar silicon wafers perform in low light conditions?: Solar silicon wafers perform relatively well in low light conditions compared to other solar technologies. Although their efficiency decreases, they can still generate electricity due to their ability to convert even small amounts of sunlight into energy. However, their performance is significantly reduced during overcast skies or in shaded areas where access to direct sunlight is limited.

Q: What is the impact of microcracks in solar silicon wafers on performance?: Microcracks in solar silicon wafers can have a significant impact on the performance of solar cells. These cracks can weaken the structure of the wafer, making it more prone to breakage during handling or installation. Additionally, microcracks can impede the flow of electrical current within the solar cell, reducing its overall efficiency. This can lead to decreased power output and lower energy conversion rates, impacting the overall performance and productivity of the solar module. Therefore, addressing and minimizing microcracks in silicon wafers is crucial for optimizing the performance and longevity of solar panels.

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