8inch Sapphire Wafer DSP Al2O3 Single Crystal for LED Lighting

Introduction of Sapphire Wafers:

   Sapphire wafers (single-crystal Al₂O₃) possess excellent thermal properties, outstanding electrical and dielectric characteristics, as well as strong resistance to chemical corrosion. They can withstand high temperatures, exhibit good thermal conductivity, high hardness, infrared transparency, and superior chemical stability. Sapphire substrates offer advantages such as low lattice mismatch and excellent physicochemical stability, making them commonly used for the growth of III-V nitride, superconductor, and magnetic epitaxial thin films. They are widely employed as high-temperature infrared window materials and substrates for III-V nitrides and various epitaxial thin films. To meet the growing demand for blue, violet, and white light-emitting diodes (LEDs) and blue laser diodes (LDs), sapphire wafers can not only be used to fabricate high-temperature superconducting thin films such as Y-based and La-based materials but also serve as substrates for growing novel and practical MgB₂ (magnesium diboride) superconducting thin films—whereas conventional single-crystal substrates are often susceptible to chemical corrosion during the MgB₂ film fabrication process.

Advantages of Sapphire Wafers:

• High Hardness & Wear Resistance: With a Mohs hardness of 9, second only to diamond, it resists scratches and abrasion, making it ideal for highly reliable cover plates and window applications.

• Broad-Spectrum Optical Transmission: Exhibits high transparency across the ultraviolet to near-infrared range, covering ~200–5500 nm, suitable for LEDs, lasers, and optical sensing.

• High-Temperature Resistance & Thermal Stability: Boasts a high melting point of ~2045°C, maintaining stability under extreme high-temperature processes and harsh environments.

• Excellent Electrical Insulation & Dielectric Stability: Offers outstanding electrical insulation properties, with a dielectric constant of 9.3–11.5 and dielectric loss <0.0001 (stable at high frequencies).

• Strong Chemical Inertness: Resistant to acids, alkalis, and oxidation, ensuring long-term reliability.

• Diverse Sizes & Processing Options: Mass-produced in 2–8-inch sizes, with expansion to 12-inch; available in double-sided polishing, nano-level surface roughness (e.g., Ra ≤ 0.3 nm), and precision finishing such as anti-reflective coatings and metallization.

Parameters of ZMSH Saphire Wafers:

Applications of 8inch Sapphire Wafers:

Semiconductor Lighting: Used as a substrate material for LED chips, providing a high-quality epitaxial growth layer for light emission.

Defense and Military: Utilized in the manufacturing of high-precision defense equipment and weapon systems.

Aerospace: Serves as an optical material supporting optical systems in spacecraft and aerospace instruments.

Microelectronic Circuits: Functions as a substrate material for LEDs, microelectronic circuits, and ultra-high-speed integrated circuits.

Infrared Military Devices: Used in the production of infrared military equipment, enabling high-precision infrared imaging.

Lasers: Acts as a material for laser fabrication, ensuring high-precision laser output.

Optical Communication Windows: Applied in optical communication devices to provide high-precision light transmission and reception.

Precision Manufacturing: Due to its excellent wear resistance and corrosion resistance, sapphire is widely used in precision manufacturing applications.

ZMSH Introduction and Related Product Recommendation:

     ZMSH is a high-tech enterprise specializing in the research, production, processing, and sales of Semiconductor substrates and optical crystal materials. ZMSH products are widely used in Semiconductor, and optical electronics, consumer electronics, the military industry, as well as the fields of laser and optical communication.  ZMSH products including optical windows, semi wafers, color glass filters and prisms have achieved a good sales record both in China and overseas market, the products have been exported to over 20 countries in EU, the USA, Japan,Isreal ,South Korea and South Asia Etc.

   ZMSH Sapphire Wafer 2inch 4inch Single Side Double Side Polish 350um Thickness Crystal Orientation C-plane for your reference

Q&A:

Q: What is a sapphire wafer?

A: A sapphire wafer is a single-crystal substrate made from aluminum oxide (Al₂O₃). It’s one of the hardest, most thermally stable, and optically transparent materials used in the semiconductor and optoelectronics industries.

Q: What size are sapphire wafers?

A: Sapphire wafers typically range from 2 to 12 inches in diameter, with thicknesses between 100 µm and 1.6 mm, depending on the device type, application, and polishing level.

Q: Is a sapphire wafer transparent?

A: Yes — a sapphire wafer is transparent, and that’s actually one of its most valuable characteristics