Monocrystal silicon crucible

Abstract

The invention discloses a monocrystal silicon crucible. The monocrystal silicon crucible comprises a crucible part body which is configured to store a quartz crucible, wherein a crucible part comprises hole units; the hole units are arranged on a side wall of the crucible part body and are used for communicating inner and outer spaces of the crucible part; the ratio of the hole units on a second crucible unit in the peripheral direction is gradually increased from one side of the bottom of the crucible part to the other side; the crucible part is made of a carbon-carbon composite material. According to the monocrystal silicon crucible, the carbon-carbon composite material is used as the side wall of the crucible, the thickness of the side wall is reduced, the capacity of the crucible is enlarged and the yield of monocrystal silicon is improved; the hole units are arranged on the side wall so that the heat transferring of a heating body of a heater on the quartz crucible and a silicon melt is improved; the hole units with different sizes, different shapes or different distribution densities are arranged on the side wall, so that the distribution of a temperature gradient in the silicon melt can be effectively reduced; the convection of the silicon melt is controlled so that the oxygen content of the monocrystal silicon is reduced.

Description

technical field [0001] The invention belongs to the technical field of semiconductor and solar crystal growth equipment, and in particular relates to a single crystal silicon crucible. Background technique [0002] Monocrystalline silicon is a semiconductor material, which is commonly used to manufacture integrated circuits and other electronic components. After entering the 21st century, in response to increasingly serious environmental problems, the demand for clean energy has promoted the development of the photovoltaic market. Crystalline silicon solar cells It is the leading product in the photovoltaic industry, accounting for 90% of the market share. Driven by the Chinese market, my country's solar photovoltaic power generation industry has developed rapidly, and my country's annual output of solar cells has grown from 1% of the world's share to more than 70% of the world's share. Compared with other crystalline silicon solar cells, monocrystalline silicon solar cells...

AI Technical Summary

Problems solved by technology

[0006] Although the above-mentioned prior art provides a crucible using a combination of carbon materials, since the carbon material is a carbon fiber reinforced carbon matrix composite material composed of pure carbon elements, its molding is formed by laminating a carbon fiber net tire and a carbon cloth into a prefabricated However, its radial thermal conductivity is poor, and there are problems such as excessive energy consumption and high oxygen content in the obtained single crystal silicon, which in turn affects its electrical properties.

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