Electrode Sapphire Substrate and Wafer C-plane LED Substrates

Short Description:

Based on the continuous upgrade of sapphire technology and the rapid expansion of the application market, 4 inch and 6 inch substrate wafers will be more adopted by mainstream chip companies due to their inherent advantages in production utilization.

Send email to us

Product Detail

Product Tags

Specification

GENERAL
Chemical Formula	Al2O3
Crystal Stucture	Hexagonal System (hk o 1)
Unit Cell Dimension	a=4.758 Å,Å c=12.991 Å, c:a=2.730
PHYSICAL
	Metric	English (Imperial)
Density	3.98 g/cc	0.144 lb/in3
Hardness	1525 - 2000 Knoop, 9 mhos	3700° F
Melting Point	2310 K (2040° C)
STRUCTURAL
Tensile Strength	275 MPa to 400 MPa	40,000 to 58,000 psi
Tensile Strength at 20° C		58,000 psi (design min.)
Tensile Strength at 500° C		40,000 psi (design min.)
Tensile Strength at 1000° C	355 MPa	52,000 psi (design min.)
Flexural Stength	480 MPa to 895 MPa	70,000 to 130,000 psi
Compression Strength	2.0 GPa (ultimate)	300,000 psi (ultimate)

Sapphire as a semiconductor circuit substrate

Thin sapphire wafers were the first successful use of an insulating substrate on which silicon was deposited to fabricate integrated circuits called silicon on sapphire (SOS). In addition to its excellent electrical insulation properties, sapphire has high thermal conductivity.CMOS chips on sapphire are particularly suitable for high-power radio frequency (RF) applications such as mobile phones, public safety band radios and satellite communication systems.

Single crystal sapphire wafers are also used as substrates in the semiconductor industry for growing gallium nitride (GaN) based devices. The use of sapphire significantly reduces costs as it is about 1/7th the cost of germanium.GaN on sapphire is commonly used in blue light emitting diodes (LEDs).

Use as a window material

Synthetic sapphire (sometimes referred to as sapphire glass) is often used as a window material because it is highly transparent between 150 nm (ultraviolet) and 5500 nm (infrared) wavelengths of light (the visible spectrum ranges from about 380 nm to 750 nm) and has a very high resistance to scratching. Key advantages of sapphire windows