|This article does not cite any references or sources. (December 2007)|
|Crystallization · Crystal growth
Recrystallization · Seed crystal
Protocrystalline · Single crystal
|Nucleation · Crystal
Crystal structure · Solid
|Methods and technology|
|Boules · Bridgman-Stockbarger
Frac. crystalliz. · Frac. freezing
Hydroth. synthesis · LHPG · Iodide process
In the Czochralski process a seed crystal is required to create a larger crystal, or ingot. This seed crystal is dipped into the pure molten silicon and slowly extracted. The molten silicon grows on the seed crystal in a crystalline fashion. As the seed is extracted the silicon solidifies and eventually a large, cylindrical boule is produced.
A semiconductor crystal boule is normally cut with a diamond saw into circular wafers, and each wafer is polished to provide substrates suitable for the fabrication of semiconductor devices on its surface.