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METHOD FOR PRODUCING SEMICONDUCTOR WAFERS FROM MONOCRYSTALLINE SILICON

机译:从单晶硅生产半导体晶片的方法

摘要

The invention relates to a method for producing semiconductor wafers from monocrystalline silicon, comprising the steps of: drawing a cylindrical portion of a monocrystal of silicon from a melt that is contained in a crucible; subjecting the melt to a horizontal magnetic field; rotating the crucible at a rotation speed and in a rotation direction as the cylindrical portion of the monocrystal is being drawn; and separating the semiconductor wafers made of monocrystalline silicon from the cylindrical portion of the monocrystal. The method is characterised in that the value of the rotation speed, averaged over time, is less than 1 rpm and the rotation direction is changed continuously and an amplitude of the rotation speed before and after the change of the rotation direction is not less than 0.5 rpm and not more than 3.0 rpm.
机译:本发明涉及一种从单晶硅制造半导体晶片的方法,包括步骤:从包含在坩埚中含有的熔体中绘制硅的单晶的圆柱形部分;使熔体进行水平磁场;随着单晶体的圆柱形部分被拉伸,在旋转速度和旋转方向上旋转坩埚;并将由单晶硅制成的半导体晶片与单晶硅的圆柱形部分分开。该方法的特征在于,随着时间的推移平均的旋转速度的值小于1rpm,并且旋转方向连续变化,并且在旋转方向的变化之前和之后的旋转速度的幅度不小于0.5 rpm且不超过3.0 rpm。

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