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Sapphire wafers and substrates are available in all orientations with the more common ones being R-plane (1-102), A-plane (11-20) also referred to as 90-degree Sapphire and C-plane (0001) referred to as 0-degree or basal plane Sapphire. Valley also stocks Silicon on Sapphire (SOS) wafers.
Because it is an anisotropic hexagonal/rhomohedral crystal, some properties depend on the crystallographic direction and these directions are specified relative to the optical C-axis.
Sapphire wafer and substrate applications include:
Microelectronic IC applications
SOS Silicon-on-Sapphire
Growth of superconducting compounds / Gallium Nitride
Infrared detectors
Hybrid microelectronics
Polishing carriers
Hostile environment
Optical transmission from ultraviolet to near infrared
High temperature
Radiation resistance
Sapphire wafers are increasingly used in the field of compound semiconductor growth. Compared with other materials, sapphire wafer has the following advantages:
High hardness
High temperature resistant
A lattice similar to a semiconductor material
Widely used sapphire substrate parameters
Diameter(mm) | 75 | 100 | 104 | 150 | 156 | 159 |
Thickness(μm) | 1000/700 | 1000/700 | 1000/700 | 1000/700 | 1000/700 | 1000/700 |
Itv(μm) | 2 | 2 | 2 | 5 | 5 | 5 |
Polish | Double-sides polish(DSP) | Double-sides polish(DSP) | Double-sides polish(DSP) | Double-sides polish(DSP) | Double-sides polish(DSP) | Double-sides polish(DSP) |
We can also mark the sapphire substrate according to your instructions.
