It is known that the density is raised to the above-mentioned problem can be reduced by treatment at high temperature for a silicon wafer in a vacuum. But the adoption of this method for a conventional silicon wafers , which are grown by CZ method, it is a problem that some defects are always present in an internal region of the surface of the wafer about 0.3 m deep and more, and a bare zone depth is shallow. Accordingly, a conventional wafer with little flexibility in the manufacture of a device.
To solve the above problem, the present invention on a silicon wafer through the conversion of monocrystalline silicon ingots by the Czochralski technique, in which defects in silicon wafers, empty street, and / or empty defects within the plate shaped plaque. As described above, when a single crystal silicon ingot is by CZ method, defects in the grown ingot in the form of stem and formed / or the shape of plates. Consequently, the relative share of the region the size of the defects is higher than that of the octahedral defects, and if the heat treatment is conducted, deficiencies are reduced to a deeper region.
In addition, the shape of the product bar defects, Knowledge and / or the form of plates, as in this sense is not that, as octahedral defects as clear spherical or confinement in a conventional plate. monocrystalline silicon wafers
are one of the main types of wafers for the manufacture of silicon solar cells, the building block of solar panels.
Silicon wafers, monocrystalline wafers, solar cells convert sunlight into electricity.A enable complex process, the production of monocrystalline silicon wafers, which represents the growth of monocrystalline silicon, reports the Florida Solar Energy Center. Extremely thin slices of glass cut and then doped with chemicals to treat its ability to convert sunlight into electricity increase.
monocrystalline solar cells with the most effective are to be home-based solar cells used frequently, Sun Power free. to convert an average 15-18 percent monocrystalline panels to more efficiency.In are to increase efficiency, monocrystalline solar cells based on smaller, so that they are installed in a variety of parameters. Creates the economies more energy efficient than costs.Due the manufacturing process of complex monocrystalline wafers and solar cells are more expensive than mono or polycrystalline thin-film solar cells. Like all solar technologies, monocrystalline wafer is doing his best in environments with high sunlight.SolarPowerFast. com reports that the windows should have a monocrystalline average life expectancy of at least 25 years consume use, provided that the panels could be injured.
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It is known that the density is raised to the above-mentioned problem can be reduced by treatment at high temperature for a silicon wafer in a vacuum. But the adoption of this method for a conventional silicon wafers , which are grown by CZ method.. Read
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