Excellent optical, physical and chemical properties. Retains high strength and chemical resistance at high temperatures. Wide transmission wavelength range.

Single crystal Sapphire is a material of a unique combination of physical, chemical and optical properties.

Sapphire substrates are ideal for use instead of glass substrates(Sapphire substrates is exceptionally hard with a Mohs hardness of 9, second only to diamond (which has a hardness of 10). For comparison, glass substrates has a hardness of ~5.5. This makes it extremely scratch-resistant.) when optical transmission is required in the ultraviolet (above 200 nm) or infrared (below 5 μm) range. Low-temperature optical measurements will also benefit from the higher thermal conductivity of sapphire substrates, and they may also be used in high temperature environments up to 2300 K.

Sapphire substrate has many exceptional properties of high hardness, high strength, scratch resistance, low dielectric loss good electrical insulation, high temperature resistance, chemical durability and excellent transmission bandwidths. Sapphire substrate plays an important role in opto-electronics industry and widely used in precision mechanical parts and vacuum equipment.

Sapphire substrate can be offered in round shape, square shape and custom shape. Our achievable diameter is up to 400mm, ultra-thin substrate is as thin as 80 microns in thickness.

What are Sapphire Substrates?

Manufacturers produce sapphire substrates from single-crystal aluminum oxide (Al2O3), often known as sapphire, because of their transparent and durable qualities. These substrates form the foundation for various semiconductor devices, optoelectronics and micro-electromechanical systems (MEMS). Renowned for their superior thermal, electrical and optical properties, sapphire substrates provide a high-quality surface for epitaxial growth, which is vital in producing high-performance devices.

What Applications Are Sapphire Substrates Used For?

Sapphire substrates find extensive applications in numerous high-tech industries. They are fundamental in producing semiconductor devices, where their thermal stability and electrical insulation properties offer substantial advantages. In optoelectronics, sapphire’s transparency and high refractive index make it an excellent choice for GaN-based LEDs, where the Patterned Sapphire Substrates (PSS) technique has boosted their efficacy. Furthermore, Micro-Electro-Mechanical Systems (MEMS) technology also uses sapphire substrates for devices like accelerometers, gyroscopes and micro-mirrors due to its superior mechanical strength and chemical resistance.

What are the advantages of sapphire substrate?

Sapphire has exceptional electrical insulation, transparency, good thermal conductivity, and high rigidity properties. Hence it is an ideal material for substrates and is used in LED and microelectronic circuits, ultra-high-speed integrated circuits.

What is patterned sapphire substrate?

Patterned Sapphire Substrates (PSS) is micro-patterned sapphire substrate used to for GaN based light emitting diodes(LEDS). The PSS reduces the dislocation density in the GaN layer, enhances the light extraction efficiency and increase LEDs' brightness.

What is the absorption of sapphire substrate?

At a wavelength < 300 nm, there is a high peak absorptance for the sapphire. While the absorptance is very low from 300 to 1200 nm, particularly in IR light. This means deep UV light is superior for the sapphire absorption.