Monday, September 19, 2022

What is Silicon Wafer?



What is silicon wafer

Silicon wafer is an important material for making integrated circuits. Various semiconductor devices can be made by means of photolithography and ion implantation on silicon wafers.

Chips made of silicon have amazing computing power. The development of science and technology continues to promote the development of semiconductors. The development of technologies such as automation and computers has reduced the cost of high-tech products such as silicon chips (integrated circuits) to a very low level. This has allowed silicon wafers to be widely used in aerospace, industry, agriculture and defense, and even sneak into every home.

The content of silicon in the earth's crust reaches 25.8%, which provides an inexhaustible source for the production of single crystal silicon. Since silicon is one of the most abundant elements in the earth's crust, the advantage of reserves is also one of the reasons why silicon has become the main material for photovoltaics for products such as solar cells that are destined to enter the mass market.

What are silicon wafers used for

Silicon wafers are the raw material for making transistors and integrated circuits. Generally, it is a slice of single crystal silicon. Silicon wafer is an important material for making integrated circuits. Various semiconductor devices can be made by means of photolithography and ion implantation on silicon wafers. Chips made of silicon have amazing computing power. The development of science and technology continues to promote the development of semiconductors.

Silicon is a chemical element, its chemical symbol is Si, formerly known as silicon. The atomic number is 14, the relative atomic mass is 28.09, there are two kinds of allotropes, amorphous and crystalline, and allotropes include amorphous silicon and crystalline silicon. A metalloid element belonging to group IVA on the periodic table. High-purity silicon is extracted from quartz. Taking monocrystalline silicon as an example, the extraction must go through the following processes: quartz sand—metallurgical grade silicon—purification and refining—deposition of polycrystalline silicon ingots—monocrystalline silicon—silicon wafer cutting.

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