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What are sapphire wafers used for? What is the difference between sapphire and silicon wafers?

What is a Sapphire Wafer? A sapphire wafer is a thin slice of crystalline sapphire, a material that is widely known for its exceptional hardness and transparency. Sapphire, or aluminum oxide (Al₂O₃), is a crystalline form of corundum, and in its purest form, it is colorless and transparent. Sapphire ...

08-26-2024
Why do we need to do epitaxy on silicon wafer substrates?

In the semiconductor industry chain, especially in the third-generation semiconductor (wide bandgap semiconductor) industry chain, the distinction between substrate and epitaxial layer is crucial. What is the significance of the epitaxial layer? What is the difference between it and the substrate? ...

08-26-2024
Can Sapphire Thermocouple Protection Tubes Replace Alumina and Ceramic Sheaths in High-Temperature, High-Pressure Environments?

Sapphire thermocouple protection tubes and sapphire thermocouple sheaths can withstand high temperatures up to 2000 degrees Celsius and pressures up to 3000 bar, making them highly suitable for harsh environments such as chemical processing, petrochemical refining, and the glass industry. Compared ...

05-30-2024
Why do silicon carbide wafers exist C-plane and silicon plane?

SiC is a binary compound formed by Si element and C element in 1:1 ratio, that is, 50% silicon (Si) and 50% carbon (C), and its basic structural unit is SI-C tetrahedron. For example, Si atoms are large in diameter, equivalent to an apple, and C atoms are small in diameter, equivalent to an orange, ...

05-24-2024
What is the TTV, Bow, Warp of silicon wafers?

Wafer surface profile parameters Bow, Warp, TTV are very important factors that must be considered in chip manufacturing. Together, these three parameters reflect the flatness and thickness uniformity of the silicon wafer and have a direct impact on many key steps in the chip manufacturing process. ...

05-24-2024
Epitaxial sheet (EPI) and its application

Epitaxial sheet (EPI) and its application Epitaxial sheet (EPI) refers to the semiconductor film grown on the substrate, which is mainly composed of P-type, quantum well and N-type. Now the mainstream epitaxial material is gallium nitride (GaN), and the substrate material is mainly sapphire. Silicon...

04-29-2024

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