Polycrystalline Silicon Wafer Description
Unlike single-crystal silicon wafers, Polycrystalline Silicon Wafers are composed of multiple crystal structures that form randomly during the cooling process. As a result, their surfaces exhibit different textures and colors, giving them a patterned appearance. The production cost of multicrystalline silicon wafers is relatively low due to their simpler manufacturing process. However, because their crystal structure is not as orderly as that of single-crystal silicon wafers, their efficiency is slightly lower.
Polycrystalline Silicon Wafer Specifications
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Item
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Theoretical Value
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Purity
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6N-7N, etc.
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Form
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Wafer
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Diameter
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6-inch, 8-inch, 12-inch
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Thickness
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200±20μm
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Melting Point
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1410℃
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Boiling Point
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2355℃
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Resistivity
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0.5~2Ω·cm
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Polycrystalline Silicon Wafer Application
- Solar Energy: Polycrystalline silicon wafers are predominantly used in the fabrication of solar panels, contributing to the generation of clean and renewable energy.
- Electronics: They are also integral in the production of various electronic components, including transistors, diodes, and sensors.
Polycrystalline Silicon Wafer Packing
Our Polycrystalline Silicon Wafer is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
FAQs
Q1: How is a Polycrystalline Silicon Wafer Made?
Answer: Polycrystalline silicon wafers are produced by:
- Melting high-purity polysilicon in a crucible.
- Casting the molten silicon into a mold to form a polycrystalline ingot.
- Slicing the ingot into thin wafers using a wire saw.
- Polishing and cleaning the wafers for use in solar cells or other applications. Q2: How does an athermalized IR lens work?
Q2: What is the Difference Between Polycrystalline and Monocrystalline Silicon Wafers?
Answer:
- Polycrystalline Wafers: Made from multiple silicon crystals, less expensive, lower efficiency (15%-18% for solar cells), and have a bluish, speckled appearance.
- Monocrystalline Wafers: Made from a single crystal of silicon, more expensive, higher efficiency (18%-22% for solar cells), and have a uniform, dark appearance.
Q3: What is the Lifespan of Polycrystalline Silicon Wafers in Solar Panels?
- Answer: Solar panels made from polycrystalline silicon wafers typically have a lifespan of 25-30 years, with gradual efficiency degradation over time (around 0.5%-1% per year).
