Monocrystalline silicon crucible

Abstract

The invention discloses a monocrystalline silicon crucible, which comprises a crucible part, wherein the crucible part is configured into a quartz containing crucible; the crucible part comprises a first crucible unit, a second crucible unit and hole units; the first crucible unit is arranged at the bottom of the crucible part; the second crucible unit is connected with the first crucible unit andforms the side wall of the crucible part; the hole units are arranged at the second crucible unit and are communicated with the inside and outside space of the crucible part; the proportion of the hole units in the circumference direction of the second crucible unit is gradually increased from one side of the bottom of the crucible part to the other side. Carbon-carbon composite materials are used as the crucible side wall, so that the side wall thickness is reduced; the crucible volume is increased; the yield of monocrystalline silicon is improved; through the arrangement of the side wall hole units, the heat transfer of a heater heating body on the quartz crucible and a silicon melt can be improved; through the arrangement of the hole units with different sizes, different shapes or different distribution densities, the temperature gradient distribution inside the silicon melt can be effectively controlled; the convection of the silicon melt is controlled, so that the oxygen contentof the monocrystalline 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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