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Service > Polysilicon and silicone

Polysilicon and silicone

Due to the unique structure of the silicone, the performance of both inorganic materials and organic materials, having a low surface tension, viscosity coefficient, high compressibility, gas permeability higher basic properties, and has low resistance, electrical insulation resistance, oxidation stability, weather resistance, flame retardant, water-repellent, corrosion-resistant, non-toxic, odorless and physiologically inert and other outstanding features, widely used in aerospace, electrical and electronics, construction, transport, chemicals, textiles, food, light industry, medical and other industries, including organic silicon is mainly used in sealing, bonding, lubrication, coating, surface activity, stripping, defoaming, waterproof, moisture, and other inert filler. With the continued growth in the number and variety of organic silicon, applications continue to expand, the formation of new chemical materials industry unique product system is important, many species can not be replaced by other chemicals, but essential.
Polysilicon is a form of elemental silicon. When the solidification of the molten elemental silicon under subcooled conditions, forms a lattice of silicon atoms arranged in a plurality of diamond nuclei, these nuclei grow as a crystal plane orientation of different grains, these grains combined, crystallized into a polycrystalline silicon . Polycrystalline materials can be used for drawing monocrystalline silicon, polycrystalline and monocrystalline difference is mainly manifested in physical properties. For example, in terms of anisotropy of mechanical properties, optical properties and thermal properties, significantly far less monocrystalline silicon; in terms of the electrical properties of the conductive polysilicon crystals are far better than single crystal silicon significantly, even almost no conductivity. In chemical activity, the difference between the two is minimal. Polycrystalline and monocrystalline silicon can be distinguished from the appearance, but the real identification required by analyzing the measured crystal plane direction, conductivity type and resistivity.
Polysilicon is the direct production of silicon raw material is electronic information materials contemporary artificial intelligence, automatic control, information processing, photovoltaic and other semiconductor devices. Is known as the "cornerstone of microelectronic building."
On the utilization of solar energy, monocrystalline and polycrystalline also play a huge role. Although the current situation, to make solar power has a large market, the majority of consumer acceptance, it is necessary to improve the photoelectric conversion efficiency of solar cells and lower production costs. From the current development of the international solar cell can be seen in its development trend of monocrystalline silicon, polycrystalline silicon, ribbon silicon, thin-film materials (including microcrystalline silicon thin film, compound-based film and dye film).

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