Wafer saphir is being used extensively as a substrate for III-V nitrides and for many other epitaxial films. We supply 99.999% high purity sapphire wafers with an excellent surface finish to meet your rigorous requirements.
Specifications of 4 Inch C-plane(0001) Sapphire Wafer
Item
4-inch C-plane(0001) 650μm Sapphire Wafers
Crystal Materials
99,999%, High Purity, Monocrystalline Al2O3
Grade
Prime, Epi-Ready
Surface Orientation
C-plane(0001)
C-plane off-angle toward M-axis 0.2 +/- 0.1°
Diameter
100.0 mm +/- 0.1 mm
Thickness
650 μm +/- 25 μm
Primary Flat Orientation
A-plane(11-20) +/- 0.2°
Primary Flat Length
30.0 mm +/- 1.0 mm
Single Side Polished
Front Surface
Epi-polished, Ra < 0.2 nm (by AFM)
(SSP)
Back Surface
Fine ground, Ra = 0.8 μm to 1.2 μm
Double Side Polished
Front Surface
Epi-polished, Ra < 0.2 nm (by AFM)
(DSP)
Back Surface
Epi-polished, Ra < 0.2 nm (by AFM)
TTV
< 20 μm
BOW
< 20 μm
WARP
< 20 μm
Cleaning / Packaging
Class 100 cleanroom cleaning and vacuum packaging,
25 pieces in one cassette packaging or single piece packaging.
Note: Custom c axis sapphire with any orientation and any thickness can be provided.
If you want to know more about custom sapphire optics, please contact us.