What is the size of a monocrystalline silicon wafer?

Monocrystalline silicon wafers are divided into 6 inches, 8 inches, 12 inches (300 mm) and 18 inches (450 mm) according to their diameters. The larger the diameter of the wafer, the more integrated circuits can be engraved, and the lower the cost of the chip. However, large-scale wafers have higher requirements on materials and technologies.
Advantages of large size:
1. Silicon wafer-cell-module side, reducing the non-silicon cost per watt.
2. Module-power station side, reducing BOS cost. The increase in the size of silicon wafers has increased the production capacity output of various links from silicon wafers, batteries, components to power stations, which is equivalent to amortizing part of the labor, depreciation, water, electricity, construction and other costs.