Material Type
Wafers are commonly made from materials such as:
- Silicon (Si)
- Sapphire (Al₂O₃)
- Silicon Carbide (SiC)
- Gallium Arsenide (GaAs)
- Quartz
Diameter
Common wafer diameters include:
Thickness
Typical thickness depends on wafer diameter:
- 525 µm for 100 mm wafers
- 675 µm for 150 mm wafers
- 725 µm for 200 mm wafers
Orientation
Silicon wafer orientations:
- <100>: General-purpose research
- <111>: Etching experiments
- <110>: Specialized applications
Coatings
Common wafer coatings include:
- Thermal Oxide
- Nitride
- Photoresist
- Epitaxial Layers