Single Crystal Square Sapphire Substrate ( C-plane , SSP )10x10 mm Single Side Polished
Single Crystal Square Sapphire Substrate (C-plane, SSP)10x10 mm Single Side Polished
Square Sapphire Substrate (SSP) Product Description
The Square Sapphire Substrate (SSP) is made from high-purity (>99.99%) single crystal Al₂O₃, offering excellent mechanical strength, thermal stability, and optical transparency. With C-plane (0001) orientation and single-side polished (SSP) surface, it is ideal for epitaxial growth, GaN-based LED production, optical components, and high-temperature or vacuum applications.
Square Sapphire Substrate (SSP) Key Specifications
| Parameter | Specification |
|---|---|
| Material | High Purity >99.99%, Single Crystal Al₂O₃ |
| Dimension | 10 × 10 mm |
| Thickness | 1 mm (other thicknesses available upon request) |
| Orientation | C-plane (0001) to M (1-100) 0.2° ± 0.1° off |
| Lattice Parameter | a = 4.785 Å, c = 12.991 Å |
| Density | 3.98 g/cm³ |
| Thermal Expansion Coefficient | 6.66×10⁻⁶ /°C (‖C-axis), 5×10⁻⁶ /°C (⊥C-axis) |
| Dielectric Strength | 4.8×10⁵ V/cm |
| Dielectric Constant | 11.5 (‖C-axis), 9.3 (⊥C-axis) @ 1 MHz |
| Dielectric Loss Tangent | < 1×10⁻⁴ |
| Thermal Conductivity | 40 W/(m·K) at 20°C |
| Polishing | Single side polished (SSP), Ra < 0.3 nm (AFM); backside fine-ground Ra = 0.8–1.2 μm |
Square Sapphire Substrate (SSP) Features & Benefits
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Exceptional chemical and thermal stability
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High optical transparency and surface flatness
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Low dielectric loss and high thermal conductivity
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Excellent mechanical hardness and scratch resistance
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Available in custom sizes, orientations, and thicknesses
Square Sapphire Substrate (SSP) Applications
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GaN and AlN epitaxial growth
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LED and laser diode manufacturing
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Optical and infrared windows
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High-power RF and microwave devices
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Research and semiconductor testing
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