2Inch Sapphire Wafer Al2O3 Monocrystalline Dia 50.80mm Thickness 430um BOW ＜10 A-plane

Sapphire wafers, made from single-crystal aluminium oxide (Al2O3), are prized for their exceptional hardness, thermal stability, and optical properties. They are extremely scratch-resistant and durable with a hardness rating of 9 on the Mohs scale. They have a high flexural strength of up to 100,000 PSI, making them robust under mechanical stress.
 
Thermally, sapphire wafers are stable up to their melting point of 2040°C and have a thermal conductivity of 25-35 W/(m·K) at room temperature. Their low thermal expansion coefficient (5.3 x 10^-6 /K) ensures they remain stable across various temperatures, which is crucial for high-temperature applications. They also possess excellent electrical insulating properties with a dielectric constant of 9.3 at 1 MHz and resistivity above 10^14 Ω·cm.
 
Optically, the thickness of 2-inch sapphire is 430um. These sapphire wafers crystallographic orientations are A-plane (11-20). They are precisely polished to achieve a surface roughness (Ra) =0.8-1.2 um, ensuring superior optical clarity and performance.
 
These attributes make sapphire wafers essential in the semiconductor, optics, and LED industries, providing robustness, thermal and chemical stability, and exceptional optical clarity.
 
 

 

Sapphire wafer Features:

• Product Name: Sapphire Wafer
• Hardness: 9 on the Mohs scale
• Crystal Structure: Hexagonal
• Melting Point: 2040°C
• Resistivity: ≥ 10^14 Ω·cm

Sapphire wafer Technical Parameters: 

Sapphire wafer Applications:

Sapphire wafers are utilized in a variety of high-tech applications due to their unique properties such as hardness, thermal stability, and optical clarity. Here are some key applications:

1. LED Manufacturing:

   • Sapphire wafers serve as substrates for gallium nitride (GaN) in the production of blue and white LEDs. They provide a suitable lattice match and high thermal conductivity, essential for efficient light emission.

2. Semiconductors:

   • Used as insulating substrates in integrated circuits, particularly in radio frequency (RF) and power electronics, due to their excellent dielectric properties and thermal stability.

3. Optical Windows:

   • Employed in harsh environments where optical clarity and durability are required, such as in military optics, space equipment, and scientific instruments. Sapphire windows are resistant to scratching and can withstand extreme temperatures.

4. Watch Crystals:

   • Sapphire crystals are used in high-end watch faces due to their scratch resistance and clarity.

5. Medical Devices:

   • Utilized in endoscopes, surgical tools, and other medical instruments that require biocompatibility, high durability, and optical clarity.

Sapphire wafer Customization:

We offer customizable sapphire wafers tailored to your specific requirements. Options include varying diameters (2”, 3”, 4”, 6”), different crystallographic orientations (C-plane, A-plane, R-plane), and precise thickness tolerances (±0.1 mm). Surface finishes can be polished to achieve low surface roughness (Ra ≤ 0.3 nm). Additional features such as custom doping, laser marking, and edge shaping are also available. These customizations ensure our sapphire wafers meet the precise needs of applications in LED manufacturing, semiconductors, optics, and more, providing optimal performance and reliability.
 
 

Sapphire wafer Support and Services:

Our Sapphire Wafer product technical support and services include:
- Material selection guidance to ensure optimal performance for your application
- Custom sapphire wafer fabrication based on your specific requirements
- Wafer cleaning and polishing services to remove surface defects and impurities
- Quality control testing and analysis to ensure consistent wafer performance
- Technical consultation to address any questions or concerns regarding the use and handling of sapphire wafers
 
 

Sapphire wafer FAQ:

Q: How are sapphire wafers manufactured?
A: Sapphire wafers are produced using the Czochralski process, where a seed crystal is dipped into molten aluminium oxide and slowly pulled out while rotating to form a large boule. This boule is then sliced into thin wafers using a diamond saw.
 
Q: How should sapphire wafers be handled and stored?
A: The following methods are just for reference.

• Handling: Use clean gloves and handle wafers with care to avoid contamination and physical damage.
• Storage: Store wafers in a clean, dry environment to avoid contamination and moisture absorption. Use protective cases or containers to prevent damage.

 
Q: What are the environmental and safety considerations for sapphire wafer production?
A: Please notice the ways followed sentences mentioned.

• Environmental Impact: The production process involves high temperatures and energy consumption. Waste management and energy efficiency are important considerations.
• Safety: Proper handling and safety protocols are necessary due to the high temperatures used in production and the brittleness of the material.