Sapphire Wafers

Sapphire wafers are single-crystal aluminum oxide substrates widely used across semiconductor, optoelectronic, photonic, and sensor-related industries. Known for their stability and suitability for complex fabrication processes, they serve as essential platforms for applications such as GaN-based LEDs, laser diodes, RF and microwave devices, optical components, and high-precision sensors. As technology development moves toward higher efficiency and reliability, sapphire wafers continue to play a vital role in supporting next-generation electronic and optical innovations.

Material Properties and Advantages

The remarkable performance of sapphire wafers is rooted in the intrinsic properties of the Al₂O₃ crystal. Sapphire exhibits a Mohs hardness of 9, making it one of the hardest materials used in semiconductor technology. This hardness provides excellent scratch resistance and long-term durability, even in abrasive or high-stress environments. Sapphire also features outstanding thermal stability, enabling devices to withstand temperatures exceeding 2000 °C without deformation. Its wide bandgap (~9 eV) minimizes electronic noise and enhances insulation performance, which is critical for high-power electronic systems. Additionally, its chemical inertness ensures resistance to acids, alkalis, and most solvents, supporting reliable performance during complex fabrication processes. These advantages collectively position sapphire wafers as a robust and versatile substrate for demanding applications.

Customizable Specifications for Diverse Needs

Sapphire wafers are available in a variety of orientations, diameters, thicknesses, and surface finishes meeting the specific requirements of different industries. Common orientations include C-plane (0001), A-plane (11-20), M-plane(10-10), R-plane (1-102), N-plane(11-23), and V-plane(22-43), each offering unique optical and mechanical characteristics. Diameters typically range from 2 inches to 8 inches, with precision thickness control and surface polishing options such as single-side polished (SSP) or double-side polished (DSP). Additional specifications—such as flatness, parallelism, and crystal quality—can be tailored to customer needs. This flexibility ensures compatibility with various epitaxial growth methods, including MOCVD and MBE, as well as downstream microfabrication processes.

Our Products

The available specifications of sapphire wafers we can offer are as follows:

• Standard Sapphire Wafers

• Custom Sapphire Wafers

With strict quality control, customizable specifications, and technical support, Alfa Chemistry delivers reliable sapphire wafer solutions that empower researchers and manufacturers to achieve superior device performance and accelerate innovation. Whether your goal is to obtain standard products or custom high-specification wafers for a specific project, our team is always ready to assist you.