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    • 7. 发明公开
    • METHOD FOR MANUFACTURING SILICON SINGLE CRYSTAL, SILICON SINGLE CRYSTAL MANUFACTURED BY THE METHOD, AND SILICON WAFER
    • 工艺用于生产制作的硅和硅晶片
    • EP1127962A4
    • 2002-03-20
    • EP00956805
    • 2000-08-30
    • SHINETSU HANDOTAI KK
    • IIDA MAKOTOKIMURA MASANORITAKENO HIROSHIHAYAMIZU YOSHINORI
    • C30B15/00C30B15/20C30B29/06H01L21/322
    • C30B15/206C30B29/06
    • A method for manufacturing a silicon single crystal by the Czochralski method, wherein a silicon single crystal containing impurities the kind and concentration of which are the same as those of a silicon single crystal to be manufactured is grown, an aggregation temperature zone of grown-in defects is determined, the condition of growth of the silicon single crystal or the temperature distribution in the puller furnace is determined according to the temperature so that the cooling rate of the crystal passing through the aggregation temperature zone may be a desired value, and a silicon single crystal containing impurities of predetermined kind and concentration is manufactured. A silicon single crystal in which the density of LSTD before heat treatment is 500 pieces/cm or more and the mean defect size is 70 nm or less is disclosed. Further a silicon single crystal manufactured by the Czochralski method in which the variations of the size and density of grown-in defects are efficiently controlled, and the quality is stable irrespective of the type of the crystal, a silicon wafer, and a method for manufacturing the same are also disclosed.
    • 一种用于生产在雅舞蹈的硅单晶与CZ方法,其特征在于在方法生产具有杂质的预定种类和浓度的晶体之前那样,要生产具有杂质的相同的种类和浓度随着晶体另一硅单晶生长 从而确定性矿团聚的温度区生缺陷它们,然后基于该温度,要生产的晶体的生长条件或拉伸装置的熔炉内的温度分布设定搜索做了晶体的冷却速度为 通过凝聚温度区是一个希望的速率,从而制得硅单晶。 在雅舞蹈产生上述方法的单晶硅,其特征在于在没有LSTDs的密度进行热处理前为500个/ cm <2>以上且平均缺陷尺寸为70nm或更小。 本发明通过CZ方法提供了一种硅单晶和硅晶片worin在尺寸和生缺陷的密度的分散体有效地抑制和质量不管各种晶体,并为此制造方法稳定化。