polysilicon 3N 4N and 5N

الوصف

Polycrystalline silicon (or semicrystalline silicon, polysilicon, poly-Si, or simply poly in context) is a material consisting of multiple small silicon crystals. Polycrystalline silicon can be as much as *9.******9% pure. Silicon is most often companioned with oxygen to form sand. When the oxygen is stripped from the silicon, crude polycrystalline silicon remains. Ultra-pure poly is used in the semiconductor industry, starting from poly rods that are five to eight feet in length.