What is polysilicon made of?
Polysilicon takes metallurgical silicon, hydrochloric acid, trichlorosilane and hydrogen directly. Trace them back and you pass 8 made things on the way to 8 raw materials.
How polysilicon is made What is made from it See it on the map
What goes straight in
From the ground: 8 raw materials
- Quartz through metallurgical silicon
- Coal through metallurgical silicon
- Timber through metallurgical silicon
- Water through hydrogen
- Natural gas through hydrogen
- Rock salt through hydrochloric acid, chlorine
- Sulfur through hydrochloric acid, chlorine, sulfuric acid
- Air through hydrochloric acid, chlorine, sulfuric acid
Made along the way: 4 things
Metals 1
Chemicals and fuels 3
What it is packed in
On the line, but left out of everything above, because it holds the finished thing rather than goes into it.