Sapphire Wafer Material Properties

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Sapphire wafer material properties.

High temperature and pressure windows or where corrosion resistance and abrasion resistance are required. Sapphire is a precious gemstone a variety of the mineral corundum consisting of aluminum oxide α al 2 o 3 with trace amounts of elements such as iron titanium chromium vanadium or magnesium. Properties of synthetic sapphire synthetic sapphire is the hardest of all known oxide crystals with a 9 on the mohs scale. Sapphire wafers and sapphire substrates are available in c r a and m plane orientations.

Large geometry substrates wafers and windows of glass quartz fused silica metal and ceramic plates as large as 36 x 36 are available to tolerances within microns. Kyocera s sapphire wafers feature excellent material properties and mass producibility. Parti sapphires show two or more colors. It is a very hard material with a high heat resistance and is highly inert resistant to attack in most process environments i e.

Kyocera s sapphire substrates feature excellent material properties and are mass produced for silicon on sapphire sos wafers. Products monocrystal sg wafers for next gen led. Valley design is an iso 9002 certified company with nearly 30 years of experience performing precision lapping and polishing materials. It is typically blue but natural fancy sapphires also occur in yellow purple orange and green colors.

Unparalleled hardness outstanding chemical resistance low refractive index and melting point over 2000 c make synthetic sapphire a versatile material of the future. Hydrofluoric acid and the fluorine plasma applications commonly found in semiconductor wafer manufacturing. Kyocera is prepared to meet future customer needs for larger wafer sizes and enhanced particle suppression. Introduction single crystal sapphire alumina al2o3 offers superior physical chemical and optical properties which make it an excellent material for applications such as high speed ic chips thin filmsubstrates andvariouselectronicandmechanicalcom ponents 1 3.

Typical properties of sapphire wafers and substrates sapphire is a single crystal al 2 o 3 with a hexagonal rhombohedral crystal structure. Polished sapphire wafers synthetic sapphire is an aluminum oxide material grown in a hexagonal crystalline form. Synthetic sapphire is second in hardness only to diamond and retains its high strength at high temperatures. Sapphire wafer have many unique features such as high strength high anti corrosion high anti abrasion low dielectric loss good electrical insulation with excellent mechanical and chemical characteristics sapphire wafer plays an important role in opto electronics industry today and widely used in precision mechanical parts and vacuum equipments.

Silicon on sapphire wafers. Transmission curve of sapphire.