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Chemical plant · United States

Hemlock Semiconductor Polysilicon Plant

One of the largest Western producers of semiconductor-grade polysilicon.

Pueblo Chemical Agent-Destruction Pilot Plant Cooling Tower… · PEO ACWA · CC BY 2.0 · Wikimedia Commons

RefiningChemical plant

What happens here

Semiconductor-grade polysilicon is purified to eleven nines — one impurity atom in a hundred billion. Solar-grade needs only six or seven, and that difference is why the two markets diverged.

In and out

Goes in

High-Purity Quartz Silicon

Comes out

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