Single Crystal Sapphire Substrates 2", 3", 4", and 6" for LED , Optical and Semiconductor Applications

Single Crystal Sapphire Substrates (2", 3", 4", and 6") for LED, Optical, and Semiconductor Applications

Product Overview

ZMSH offers high-quality single crystal sapphire substrates available in 2-inch, 3-inch, 4-inch, and 6-inch diameters, manufactured from 99.99% pure Al₂O₃ (aluminum oxide) using advanced crystal growth and polishing technology.
These sapphire wafers feature superior hardness, chemical stability, thermal conductivity, and optical transparency, making them the preferred material for LEDs, GaN epitaxy, optical windows, semiconductor thin films, and microelectronic devices.

ZMSH sapphire substrates are available in both single-side polished (SSP) and double-side polished (DSP) forms, with surface roughness as low as Ra ≤ 0.3 nm and total thickness variation (TTV) under 3 μm. Each wafer is precisely cut to A-plane, C-plane, M-plane, or R-plane orientation according to customer requirements, ensuring optimal lattice matching for high-yield epitaxial growth and superior device performance.

Key Features

• High Purity Material: >99.99% single crystal Al₂O₃ with low defects and impurities.

• Excellent Surface Quality: Scratch/dig 20/10, Ra ≤ 0.3 nm, ideal for epitaxial deposition.

• Dimensional Accuracy: Tight tolerances in diameter and thickness; customizable sizes.

• Thermal & Chemical Stability: Withstands up to 2000°C and highly resistant to acids and alkalis.

• Optical Transparency: Broad transmission range from UV to IR (190 nm–5 μm).

• Custom Options: Available in 2", 3", 4", 6" sizes, and custom thickness or orientation.

Applications

• LED & Optoelectronics: GaN, AlN, and InGaN epitaxial growth for high-brightness LEDs and LDs.

• Semiconductors: Thin-film devices, ICs, and MEMS components.

• Optical Systems: Windows, lenses, and laser components requiring durability and clarity.

• Aerospace & Defense: Infrared sensors and high-temperature optical windows.

• Research & Development: Optical coatings, epitaxy trials, and advanced material studies.

Technical Specifications

FAQ

1. What is a sapphire substrate?
A sapphire substrate is a single crystal wafer made from aluminum oxide (Al₂O₃), used as a base material for epitaxial growth in LEDs, laser diodes, and semiconductor devices.

2. What crystal orientations are available?
ZMSH offers C-plane (0001), A-plane (11-20), R-plane (1-102), and M-plane (10-10) orientations, depending on the required lattice matching for specific materials like GaN or AlN.

3. What polishing options do you provide?
We provide Single Side Polished (SSP) and Double Side Polished (DSP) substrates. Each surface undergoes precision lapping and chemical-mechanical polishing to ensure ultra-smooth and defect-free surfaces.

4. Can I request custom sizes or thicknesses?
Yes. ZMSH supports full customization in diameter, thickness, orientation, and edge shape according to your technical drawings or application requirements.