Semiconductor Wafer Inc

 

Sapphire Wafer

Semiconductor Wafer Inc. provides sapphire wafer with complete orientation options including
C plane , A plane , R plane and M plane , in diameter range  from 1" to 4" , square substrate is
also available as well , size from 10 x 10 mm to 100 x 100 mm . Substrate are produed as per
SEMI standard , it has good surface finish Ra < 5A and high cleanliness , SWI can offer epi ready
grade sapphire wafer for your epitaxial growth . Sapphire wafer are produced by Kyroplous
method , due to it's high strength, high anti-corrosion , high anti-abrasion , low dielectric loss and
good electrical insulation , single crystal  sapphire wafer plays an increasingly important role as a
material for blue LED and high Tc superconductor and microwave applications. Please contact us
for further information on price & delivery time .   
 
 
 
 
Sapphire Wafer Features
High working temperature
Good thermal conductivity
Superior mechanical properties
High anti corrosion
Stable dielectric constant & low dielectric loss
Excellent light transmission   
 
Sapphire Wafer Applications

Blue LED substrate
Superconductor substrate
Electronics and optoelectronics
UV and optics                                                                                                       

 
Crystal Properties
Growth method
Kyroplous
Crystal structure
Hexagonal
Chemical formula
Al2O3
Lattice constant
4.77 A
Hardness
9
Thermal conductivity
46 W / mk
Dielectric constant
11.58
Refractive index 1.768
 
Standard Specification
Round shape Ø 1" / 2" / 3" / 4" / 6"
Square shape 10 x 10 mm / 20 x 20 / 30 x 30 / 50 x 50 / 100 x 100 mm
Thickness 0.43 / 0.5 / 1 mm
Orientation <0001> / <1120> / <1102> / <1010>
C plane / A plane / R plane / M plane
Surface finish one side / two sides epi polished
Surface roughness Ra <= 5 A
Package method Single wafer container or Ampak cassette
 
 
 
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