Sapphire wafers by Vritra Technologies

We offer high purity single crystal (Al2O3)Sapphire wafer


Synthetic Sapphire is single crystal form of Aluminium Oxide (Al2O3). It exhibits unique physical and chemical properties like high temperature resistance, thermal shocks resistance, high strength, scratch resistance, low dielectric loss and good electrical insulation. Being an oxide it is also resistant to any kind corrosion due to moisture. Sapphire wafer have wide optical transmission range from UV to infrared region that is 150 to 6000 nm and due to its high strength its thickness can be suitably reduced to small level without breaking it, so can be used very close to its transmission range. Our Sapphire substrates are manufactured using Kyropoulos method which result in high quality product. We offer both single side polished and double side polished (optically transparent) wafers with 5 different Crystal orientation namely A plane, R plane, C plane and M plane. Each plane of sapphire have different properties and find use in different applications like C-plane sapphire substrates are widely used to grow GaN thin films for laser diode and blue led applications. And R-Plane substrates are widely used for heteroepitaxial growth of Silicon films for electronic applications. The wafer comes in different sizes: 2 Inch, 3 Inch, 4 Inch, 5 Inch, 6 Inch and other customized dimension as per request.

Synthetic sapphire wafers have following characteristics :
  • High Purity of 99.995%
  • Ideal to use in optical transmission from ultraVoilat and near-infrared because of wide optical transmission band.
  • When compared with a standard glass substrate sapphire wafer is significantly stronger.
  • Resistant towards scratches.
  • A high melting Point of 2303°K
Specification of Sapphire wafer Table
Crystal Material AI203 Sapphire
Purity ≥99.995%
Crystal class Hexagonal system, rhomboidal class 3m
Lattice constant a=4.785A, c=12.991A
Diameter 2, 3, 4, 5, 6 inches
Thickness 430um, 600um, 650um, 1000um, or other customized thickness available.
Density 3.98 g/cm3
Dielectric Strength 4 x 105V/cm
Melting point 2303°K
Thermal Conductivity 40 W/(m.K) at 20℃
Surface Finish One side polished, Double sides polished (optically transparent)
Optical Transmittance For Double side polished: 86%
Optical Transmittance range For Double side polished: 150 nm to 6000 nm (Click here to view spectrum)
Plane A, R, C, M
For custom size,contact us at [email protected] or 9868742525 for quotation at any time.
You can also buy 2 inch Sapphire Wafer (Ready Stock) from our store below.

Contact Us

Email: [email protected], [email protected]

Mobile: +91-9868742525