how a silicon wafer is made
Silicon raw material purification: Silicon extracted from sand is chemically purified to form high-purity polysilicon.
Monocrystalline Growth: Polycrystalline silicon is melted and grown into monocrystalline silicon rods by the straight drawing method or zone melting method
how a silicon wafer is made
Rod Cutting (Wire Cutting): Diamond wire saws or plated diamond wire are used to cut the monocrystalline silicon rods into thin slices, i.e. wafers. This process is critical to the thickness and quality of the wafers.
Silicon ingot processing:
The cooled silicon ingots are inspected, cut and further processed to prepare them for solar cell wafer production.
Charging & Preparation:
Place the coated quartz crucible on the heat exchange table and add the silicon feedstock.
Install heating equipment, insulation, and evacuate to 0.05-0.1 mbar to minimize exposure to airborne impurities.
