Crystal Orientation: C-plane (0001)
Purity: 99.99% pure Sapphire crystal
Surface Finish: SSP or DSP
Wrap: ≤20 um
TTV: ≤20 um
Bow: ≤20 um
Application Properties & Features of Sapphire Wafers
1. Excellent Optical Transparency
The sapphire wafer’s high purity translates into superior optical
clarity across the ultraviolet, visible, and near-infrared
spectrum. Its high transmittance (> 90%) makes it ideal for use
in optical components such as windows, lenses, and laser
substrates. The C-plane orientation provides uniform optical
properties, essential for precise light manipulation.
2. Mechanical Durability
With a hardness of Mohs 9, sapphire wafers are among the hardest
materials available, offering exceptional scratch resistance and
mechanical strength. The anti-scratching coating further enhances
surface durability, minimizing surface damages during handling,
processing, and assembly.
3. High Thermal and Chemical Stability
This sapphire wafer can withstand extreme temperatures up to 2000°C
with minimal distortion, making it suitable for high-temperature
applications like LED epitaxy and sensor fabrication. Its chemical
inertness ensures resistance to corrosive environments, prolonging
component lifespan.
4. High Purity and Crystalline Quality
Manufactured through controlled crystal growth methods (Kyropoulos
or similar), the wafer’s purity (99.99%) reduces impurity-related
defects, improving device performance and yield. The precise
C-plane orientation facilitates epitaxial layer growth with minimal
defects, critical for semiconductors like GaN, LEDs, and laser
diodes.
Factory Equipments
Q&A
Q: How does this sapphire wafer compare in terms of durability and
performance to other substrates?
A: Sapphire wafers are among the hardest and most durable substrates
available, with excellent chemical inertness and thermal stability.
Their high purity and crystalline integrity also provide superior
optical clarity and epitaxial quality compared to many other
materials like silicon or quartz.
