SILICON ON SAPPHIRE

• 

A Brief Introduction of Silicon on Sapphire Technology

Silicon on sapphire (SOS) technology is a hetero-epitaxial process for metal-oxide-semiconductor (MOS) integrated circuit (IC) manufacturing that consists of a thin layer (typically thinner than 0.6 µm) of silicon grown on a sapphire (Al2O3) wafer. SOS is part of the silicon-on-insulator (SOI) family of CMOS (complementary MOS) technologies. Typically, high-purity artificially grown sapphire crystals are used.

The silicon is usually deposited by the decomposition of silane gas (SiH4) on heated sapphire substrates. The advantage of sapphire is that it is an excellent electrical insulator, preventing stray currents caused by radiation from spreading to nearby circuit elements. SOS faced early challenges in commercial manufacturing because of difficulties in fabricating the very small transistors used in modern high-density applications.

This is because the SOS process results in the formation of dislocations, twinning and stacking faults from crystal lattice disparities between the sapphire and silicon. Additionally, there is some aluminum, a p-type dopant, contamination from the substrate in the silicon closest to the interface.

Silicon on Sapphire Technology

Why is Silicon on SapphireTechnology So Important to Integrated Circuit

Due to sapphire has high permittivity that can eliminate the interaction between components of the integrated circuit, not only can reduce leakage current and parasitic capacitance, enhance radiation resistance and reduce power consumption but also can improve the level of integration and two-layer wiring, thus, sapphire is the ideal material for large scale and very large scale integrated circuit.

Silicon on sapphire technology provides ideal isolation and reduces the parasitic capacitance at the bottom of the PN junction, so it is suitable for high-speed large scale integrated circuits to achieve high speed and low power consumption. This process is generally used to make CMOS circuits.

In addition, in the SOS microelectronic circuit design and production, all kinds of semiconductor devices usually need to make on the structural integrity silicon thin film, and because thermal expansion coefficient of silicon is similar to sapphire, a silicon monocrystalline film (100) can be grown on the surface orientation(1-102) of the sapphire substrateby heteroepitaxy.

At present, sapphire crystal has become a widely used substrate for the growth of semiconductor materials.

CRYSCORE OPTOELECTRONIC LIMITED has been a professional manufacturer specialized in high-qualitysos wafers, silicon on sapphire wafersand sapphire opticswindowsand etc.Want to know more? Please contact us.

Другие товары поставщика

	CUSTOM SAPPHIRE WINDOWS	Due to the extensive applications of sapphire in various fields, different dimensions are required. CRYSCORE can provide custom sapphire windowswi...
	CUSTOM SAPPHIRE WAFERS	CRYSCORE supplies sapphire wafers with the high-quality surfaces in all orientations (C-planesapphire, A plane sapphire, R-planesapphire, M plane s...
	PATTERNED SAPPHIRE SUBSTRATES	Sapphire wafer is the most widely used substrate material in semiconductor lighting industry, and patterned sapphire substrate(PSS) is the general ...
	M-PLANE (10-10) SAPPHIRE WAFERS	Due to its application prospects in solar-blind ultraviolet detection, MgZnO alloy semiconductor films with suitable band gaps have attracted more ...
	PATTERNED SAPPHIRE SUBSTRATES	Sapphire wafer is the most widely used substrate material in semiconductor lighting industry, and pattern sapphire substrate(PSS) is the general me...

Похожие товары

	Custom Flat Lollipop Production	Продавец: Jiangsu Flying Dragon Food Machinery Co., Ltd.	Custom Flat Lollipop Production provides tailored machinery solutions for shaping, forming, and p...
	custom electrical enclosures	Продавец: 869600	custom electrical enclosures When searching for , they are looking for a manufacturer who ca...
	cnc precision machining service	Продавец: 869600	cnc precision machining service CNC Precision Machining Service Hebi Jin Hui Precision Mach...
	Microcrystalline wax used for high end candle production	Продавец: Syntop chemical Co.,Ltd.	The core industrial applications of microcrystalline wax primarily stem from its finer crystal st...
	Microcrystalline wax used for improving the flexibility of packaging materials	Продавец: Syntop chemical Co.,Ltd.	Microcrystalline wax is a specialty wax extracted from petroleum. Its primary functions include t...