Polished Sapphire Wafers and Substrates

Sapphire wafers and substrates are available in all orientations with the more common ones being R-plane (1-102), A-plane (11-20) also referred to as 90-degree Sapphire and C-plane (0001) referred to as 0-degree or basal plane Sapphire. Valley also stocks Silicon on Sapphire (SOS) wafers.

Transmission Curve and Technical Data Sheet

Because it is an anisotropic hexagonal/rhomohedral crystal, some properties depend on the crystallographic direction and these directions are specified relative to the optical C-axis.

Sapphire wafer and substrate applications include:

• Microelectronic IC applications
• SOS Silicon-on-Sapphire
• Growth of superconducting compounds / Gallium Nitride
• Infrared detectors
• Hybrid microelectronics
• Polishing carriers
• Hostile environment
• Optical transmission from ultraviolet to near infrared
• High temperature
• Radiation resistance

Informative Sapphire Web sites:

• www.edgepolishing.com Edge and angle polishing for optoelectronic devices
• www.customdicing.com Dicing of Sapphire wafers and substrates
• www.sapphirewafers.com/sapphire.htm Synthetic Sapphire
• www.sapphirewafers.com/dicing.htm Dicing
• www.sapphirewafers.com/disco-dicing.htm Disco dicing saws and dicing blades
• www.ultra-thin.com Sapphire ultra-thin wafers, substrates and windows
• www.quartz-silica.net/sapphire.htm Sapphire index of refraction

C-Plane Sapphire Dicing Disco Dicing Sapphire SOS Sapphire

VALLEY DESIGN NEWS

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