Sapphire wafer is a type of transparent, crystalline aluminum oxide that is used as a substrate material in the production of electronic and optoelectronic devices. Sapphire wafers are thin, circular discs of sapphire that are used as a substrate material in the manufacturing of these devices.
Sapphire is known for its excellent mechanical, thermal, and electrical properties, which make it useful in a variety of high-performance applications. It is used in the production of transistors, diodes, and other electronic devices, as well as in the manufacturing of LED lighting systems and other optoelectronic devices.
Sapphire wafers are used in a variety of applications, including telecommunications, military and aerospace systems, and consumer electronics. They are particularly useful in applications that require the ability to operate at high temperatures and high power levels, or that require a high level of transparency.
There are several key specifications to consider when working with sapphire wafers:
- Diameter: Sapphire wafers are typically available in a range of diameters, including 2 inches, 3 inches, 4 inches, and 6 inches. The diameter of the wafer can affect the cost and performance of the devices that are manufactured on it.
- Thickness: Sapphire wafers are available in a range of thicknesses, typically ranging from 100 micrometers to 750 micrometers. The thickness of the wafer can affect the strength and flexibility of the devices that are produced on it.
- Surface roughness: The surface roughness of sapphire wafers can affect the quality of the devices that are produced on them. Sapphire wafers with a smooth surface may be preferred for certain applications, such as the production of high-quality integrated circuits.
- Crystalline quality: The crystalline quality of sapphire wafers can affect the performance of the devices that are produced on them. Sapphire wafers with high crystalline quality may be preferred for certain applications, such as the production of high-performance transistors.
- Transparency: Sapphire wafers are known for their high level of transparency, which makes them useful in optoelectronic applications. The transparency of sapphire wafers can be affected by the presence of impurities or defects in the crystal structure. Sapphire wafers with high levels of transparency may be preferred for certain applications, such as the production of LED lighting systems.
