4inch Cplane Patterned Sapphire Substrate (PSS)
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4inch Cplane Patterned Sapphire Substrate (PSS)

The development of patterned sapphire substrates is expected to benefit the high-brightness LED industry.

Using Patterned Sapphire Substrates can significantly increase the light output of LEDs. Benefits include:
- Increased light emissions of active quantum well layers as the result of reduced epitaxial defect density.
-PSS reduces light loss due to the Total Internal Reflection (TIR) phenomena by enabling a photon scattering effect.

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Product Description

Detailed specification:

Crystal Material99.996%,high purity, monocrystalline Al2O3
OrientationCplane offto Mplane
Diameter4 inch
Patterned SpecDiameter: 2.7 ± 0.15 μm;  Spacing: 0.3 ± 0.15 μm;  Depth: 1.75 ± 0.15 μm
Pattern type3μm pitch, Cone Type
Thickness650±25 μm
SurfaceSSP or DSP
PackageClass 100 clean room cleaning, vacuum packaging; 25 pieces in one cassette packaging or individual packaging

Sapphire wafer is the most widely used substrate material in semiconductor lighting industry, and patterned sapphire substrate (PSS) is the general method to improve the luminous efficiency of semiconductor lighting devices. These sapphire substrates are with periodic structures of various shapes such as cone, dome, pyramid, and pillar, etc.