5inch R-plane sapphire wafer,dia125mm sapphire substrates ,6inch C-axis double side polished sapphire wafer for led epi-ready,sapphire substrates, Al2O3 crystal optical lens

5inch Specifications

Material: Single crystal Al2O3 99.999％
Diameter:125.00±0.1mm
Thickness :1000±25um
Primary flat:42.5±2.5mm
OF Orientation flat: C±0.1°C-plane(0001)
Orientation: R±0.1°Or A-plane,M-plane
Frontside Surface Roughness:Ra＜0.3nm
Backside Surface Roughness: 0.8~1.2um
Or double side polished
TTV:＜20um
BOW:-25~0um
WARP:＜30um
Laser Mark Series No. by needs
Package:Vacuum-sealed containers with nitrogen backfill in a class 100environment
Cleanliness :Free visible contamination

Produce step for saphire wafers

Sapphire crystal body--->get rough ingot in customized axis--->cut tail＆ top off---->

repair diameter shape----> Grind OF surface--->( anneal -->)wire cut--->chamfer-->anneal--->lapped---polished---infection

Synthetic sapphire—sometimes referred to as sapphire glass—is commonly used as a window material, because it is both highly transparent to wavelengths of light between 150 nm (UV) and 5500 nm (IR) (the visible spectrum extends about 380 nm to 750 nm, and extraordinarily scratch-resistant.

The key benefits of sapphire windows are:

Very wide optical transmission band from UV to near-infrared, (0.15–5.5 µm)
Significantly stronger than other optical materials or standard glass windows
Highly resistant to scratching and abrasion
Extremely high melting temperature (2030 °C)

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