What is the differece between silicon and polysilicon? where are these available?

Question

What is the differece between silicon and polysilicon? where are these available?

Answer 1

Silicon usually refers to a single crystal wafer of silicon, usually cut from a larger single crystal boule. You can buy these from many suppliers online, just google "silicon wafers"

Polysilicon refers to polycrystalline silicon, which is usually a layer of Si that has been deposited on a Si wafer. Because it's difficult to deposit single crystals, it is usually a polycrystalline film