Applications
● Growth substrate for III-V and II-VI compounds.
● Electronics and optoelectronics.
● IR applications.
● Silicon On Sapphire Integrated Circuit(SOS).
● Radio Frequency Integrated Circuit(RFIC).
In LED production, sapphire wafers are used as a substrate for the growth of gallium nitride (GaN) crystals, which emit light when an electric current is applied. Sapphire is an ideal substrate material for GaN growth because it has a similar crystal structure and thermal expansion coefficient to GaN, which minimizes defects and improves crystal quality.
In optics, sapphire wafers are used as windows and lenses in high-pressure and high-temperature environments, as well as in infrared imaging systems, because of their high transparency and hardness.
Specification
| 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. |
Packing & Shipping
Generally speaking, we provide the package by 25pcs cassette box; we also can packed by single wafer container under 100 grade cleaning room according to the client's requirement.
Detailed Diagram