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What is the difference between silicon and silicon dioxide in use? Try to point out in detail

What is the difference between silicon and silicon dioxide in use? Try to point out in detail

Answer:

Crystalline silicon: elemental silicon is a relatively reactive nonmetallic element that forms compounds with 64 elements in 96 stable elements. The primary use of silicon is determined by its semiconducting properties. Silicon material is the most important semi conductive material at present. At present, the world's annual output is about 3 * 106kg. A diameter of 75mm silicon chip, can be integrated tens of thousands to hundreds of thousands or even millions of components, forming a micro electronics, thus the emergence of microcomputers, microprocessors and so on. Because of the development of current information engineering, silicon is mainly used in micro electronics technology. Tube power semiconductor device based on thyristor element, bigger and bigger, compared with silicon transistor integrated circuit on the contrary, silicon chip with the diameter of 75mm, only a few kA can withstand the current and voltage of several kV components, the components into electronics, power and control field is 3 the formation of a new discipline - power electronics. In order to adapt to the development of large-scale integrated circuits, monocrystalline silicon is developing toward large diameter, high purity, high uniformity and no defect. The maximum silicon diameter is 150mm, and the experimental high purity silicon is close to the theoretical limit purity. Solar cells are commonly used in silicon batteries. If the area of 1 square meters is covered with silicon solar cells, 100W power can be obtained. Monocrystalline silicon solar cells have stable performance, high conversion efficiency, small size and light weight. They are suitable for the power supply of space spacecraft. The United States -- large spacecraft space laboratory is equipped with 4 solar panels, which are composed of single crystal silicon solar cell 147840 8 square centimeters in size and arranged, power is about 12KW.
When the molten silicon is solidified, the silicon atoms are arranged into many nuclei in a diamond lattice, and if these nuclei grow into crystalline grains with the same orientation, these grains are united in parallel and crystallized into monocrystalline silicon.Monocrystalline silicon has the physical properties of quasi metal, has a weak conductivity, and its conductivity increases with the increase of temperature, and has significant semi conductivity. Ultra pure monocrystalline silicon is an intrinsic semiconductor. The incorporation of A III trace elements in ultra pure silicon, such as boron can improve the electrical conductivity of the degree, and the formation of P type semiconductors; such as the incorporation of group V A trace elements, such as phosphorus or arsenic can also improve the conductivity, the formation of N type silicon semiconductor.The preparation of monocrystalline silicon is usually made from polycrystalline silicon or amorphous silicon, and then Czochralski silicon or silicon carbide is grown from the melt. Monocrystalline silicon is mainly used to make semiconductor components.
Silicon can be used in semiconductors, such as transistors, solar panelsSilica dioxide can be used as the main component of optical fiber ceramic, and can also be used as artificial bone. It can react with HF at room temperature

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