What is a Silicon Wafer?
Silicon is a gray, brittle, tetravalent, chemical element. It makes up 27.8% of the earth’s crust and next to oxygen, it is the most abundant element in nature. Some of the most common materials that contain silicon are quartz, agate, flint, and common beach sand, among others. It is the main component in building materials like cement, brick, and glass. Silicon is also the most common material to build semiconductors and microchips with. Ironically, silicon by itself does not conduct electricity very well; however, it can take on dopants precisely in order to control resistivity to an exact specification.
Before a semiconductor can be built, silicon must turn into a wafer which becomes a silicon wafer. This begins with the growth of a silicon ingot. A single silicon crystal consists of atoms arranged in a three-dimensional periodic pattern that extends throughout the material. A polysilicon crystal is formed by many small single crystals with different orientations, which alone, cannot be used for semiconductor devices.
Silicon Valley Microelectronics provides different diameter silicon wafers (300mm, 200mm, 150mm, 125mm, 100mm, 76mm, and 50mm) in a variety of specifications, suitable for a wide range of applications.
Silicon Valley Microelectronics uses simultaneous double-side polishing technology, and therefore can supply a wide variety of high-quality ultra-flat wafers to meet the exact controlled flatness requirements of each customer.
Silicon Valley Microelectronics can supply a wide variety of high-quality ultra-flat wafers to meet the exact controlled flatness requirements of each customer.
Silicon Valley Microelectronics offers float zone (FZ) wafers ranging in diameter from 50mm to 200mm. These wafers have a low concentration of impurities and high-temperature capabilities. The properties of FZ wafers give them advantages over CZ wafers in a variety of applications.
Silicon Valley Microelectronics supplies both N-type and P-type low resistivity wafers in all diameters, 50mm to 300mm, with or without backseal. We can achieve resistivity <0.01 ohm-cm.
Silicon Valley Microelectronics supplies a variety of N-type wafers with phosphorus/antimony/arsenic dopant, in diameters ranging from 50mm to 300mm.
Silicon Valley Microelectronics offers a variety of 200mm and 300mm coinroll wafers.
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