CRYSCORE polishes the sapphire wafers by special CMP (Chemical Mechanical Polishing) technology, which is a widely used planarization technology, and provides the customers with high surface quality sapphire wafers at low cost.
We carry a variety of standard sapphire wafers and sapphire substrates in stock to ensure a quick delivery. The wafers are cleaned in class 100 cleanroom by ultrapure water with quality above 18 MΩ *cm, and then packed in clean cassettes. 25 pcs a pack or single pack is available to maximize customer flexibility in their research.
| Item | 2-inch C-plane(0001) 430μm 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 | 50.8 mm +/- 0.1 mm | |
| Thickness | 430 μm +/- 25 μm | |
| Primary Flat Orientation | A-plane(11-20) +/- 0.2° | |
| Primary Flat Length | 16.0 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 | < 10 μm | |
| BOW | < 10 μm | |
| WARP | < 10 μm | |
| Cleaning / Packaging | Class 100 cleanroom cleaning and vacuum packaging, | |
| 25 pieces in one cassette packaging or single piece packaging. | ||
Note: Custom sapphire wafers with any orientation and any thickness can be provided.
An Introduction to Silicon on Sapphire Technology
Coating and Metal Coating of Sapphire Windows
Introduction to the Manufacturing Process of Sapphire Ingot
