Naturally occurring high-purity quartz rock is a key source of silicon.
High quality polysilicon is the essential building block that enables our
computer-driven, high-technology world.
From quartz rock to electronic circuits
The process that begins with quartz rock and ends with solar cells and the
boundless range of electronic devices, such as computers, cell phones, and game
consoles, is complex, involving a number of manufacturers and processes.
Hemlock Semiconductor Group manufactures the high-purity polycrystalline
silicon feedstock critical to the manufacture of solar and semiconductor
Hemlock Semiconductor’s manufacturing process begins with the silicon-based
chemical trichlorosilane, which we
convert into high-purity polysilicon using a chemical vapor deposition (CVD)
reactor technology process. Polycrystalline silicon is manufactured up to
99.999999999% purity level in U-rod form in a process that is clean, safe, and
in strict compliance with environmental laws.
Beyond the polysilicon deposition process, Hemlock Semiconductor process
technology captures and recycles all chemical by-products.
Using the Siemens process, polycrystalline silicon is “grown” from
trichlorosilane silicon source chemicals.