.

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.



Send product request

To: CRYSCORE OPTOELECTRONIC LIMITED
Your E-mail:
Message text:


Send to other suppliers

Other supplier products

8 INCH C-PLANE(0001) SAPPHIRE WAFERS
8 INCH C-PLANE(0001) SAPPHIRE WAFERS The 8-inch sapphire waferscan enable chip makers to roll out more productivity, which will help them drive down costs dramatically. CRYSCORE is ...
SAPPHIRE INGOTS/RODS
SAPPHIRE INGOTS/RODS SAPPHIRE INGOTS/RODS Sapphire ingots are typically used as raw materials for further processing. These sapphire rod and sapphire ingots are uniform...
GaN on Sapphire
GaN on Sapphire As a professional sapphire wafermanufacturer, CRYSCORE can provide standard or optical sapphirewafers with any orientation applied to epitaxy, as w...
SAPPHIRE WAFERS / SAPPHIRE SUBSTRATES
SAPPHIRE WAFERS / SAPPHIRE SUBSTRATES Due to the less mismatched lattice and stable chemical and physical properties, sapphire(Al2O3) wafer is the popular substrates for III-V nitrides,...
STANDARD SAPPHIRE WAFERS (C-PLANE)
STANDARD SAPPHIRE WAFERS (C-PLANE) CRYSCORE can offer Epi-Ready grade sapphire wafer with a very low surface roughness in complete orientation options. C-plane(0001) sapphire wafer...
All supplier products

Same products

SONG NAM Fresh Young Coconut in Vietnam
SONG NAM Fresh Young Coconut in Vietnam Seller: Song Nam ITD Co., Ltd Fresh Young Coconut is an organic fresh fruit and whole year round in Vietnam. Our fresh young co...
Looking for Vietnamese green seedless lime exporter
Looking for Vietnamese green seedless lime exporter Seller: Song Nam ITD Co., Ltd Song Nam is one of the best exporter of green seedless lime in Vietnam. With the long term cooper...
Song Nam export Vietnamese dragon fruit
Song Nam export Vietnamese dragon fruit Seller: Song Nam ITD Co., Ltd Song Nam ITD has grown up from dragon fruit farmer families, so we understand all procedures from...
Hungary-Self-pressurized liquid nitrogen tank-ln2 tank price
Hungary-Self-pressurized liquid nitrogen tank-ln2 tank price Seller: Henan Tianzhidao Biological Technology Co., Ltd Liquid nitrogen is a key cooling medium in modern scientific research and industrial fields. Its ...
Casting wax used for golf head manufacturing
Casting wax used for golf head manufacturing Seller: Syntop chemical Co.,Ltd. Casting wax is mainly used in the field of aviation industry, civil precision casting, but also i...