Special-shaped quartz crucible

Abstract

The invention provides a special-shaped quartz crucible, comprising a crucible wall and a crucible bottom, wherein the crucible wall and the crucible bottom are integrated, the crucible bottom is of a plane shape, and the cross section of the crucible wall is of regular polygon. In the invention, because of regular hexagon design, the single surface area of a regular hexagon is lessened as compared with the single surface area of a quadrangle in the same volume, and the requirement of the shrinkage rate of a gypsum mould is reduced; and simultaneously because the area of the single surface is lessened, the requirement of the water-containing rate of a green body is relatively reduced, the requirement on the shrinkage rate of a heating plate is also reduced, and the heat conversion rate is improved.

Description

technical field [0001] The invention relates to a quartz crucible, in particular to a special-shaped quartz crucible. Background technique [0002] With the advancement of science and technology, the market's quality requirements for monocrystalline silicon have been specifically refined to the quality requirements for silicon wafers, and the quality of the crucible will directly affect the quality of monocrystalline silicon. In the prior art, the quartz crucible is generally a round bottom. At the end of the round, there is a lot of liquid crystal growth silicon material remaining at the bottom of the round crucible, resulting in a certain degree of waste. Therefore, someone produced a quadrilateral crucible, which solved the waste of the remaining material at the bottom of the pot to a certain extent. However, this has very high requirements for the mold, and the single-sided area is large, and the shrinkage rate is also large. The requirements for the heating plate High ...

AI Technical Summary

Problems solved by technology

In the prior art, the quartz crucible with a round bottom is generally used. At the end of the round, there is a lot of liquid crystal growth silicon material remaining at the bottom of the round crucible, resulting in a certain degree of waste.

Therefore, someone produced a quadrilateral crucible, which solved the waste of the remaining material at the bottom of the pot to a certain extent. However, this has very high requirements for the mold, and the single-sided area is large, and the shrinkage rate is also large. The requirements for the heating plate high, difficult to control

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