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    • 5. 发明授权
    • Method for manufacturing silicon single crystal wafer and annealed wafer
    • 硅单晶晶片和退火晶片的制造方法
    • US08916953B2
    • 2014-12-23
    • US13993810
    • 2012-01-06
    • Wei Feng QuFumio TaharaYuuki OoiShu Sugisawa
    • Wei Feng QuFumio TaharaYuuki OoiShu Sugisawa
    • H01L29/32C30B33/02C30B29/06
    • C30B33/02C30B29/06H01L29/32
    • The present invention provides a method for manufacturing a silicon single crystal wafer, in which a heat treatment is performed with respect to a silicon single crystal wafer having oxygen concentration of less than 7 ppma and nitrogen concentration of 1×1013 to 1×1014 atoms/cm3, which is obtained from a V-region silicon single crystal ingot grown by the Czochralski method, in a non-nitriding atmosphere at 1150 to 1300° C. for 1 to 120 minutes. As a result, a method for manufacturing a low-cost silicon single crystal wafer which is applicable to an IGBT by using a V-region wafer that is manufactured by the CZ method which can cope with an increase in diameter, by making a bulk have no defects and by providing a radial resistivity distribution, which is substantially equal to that when the neutron irradiation is effected, without performing the neutron irradiation is provided.
    • 本发明提供了一种制造硅单晶晶片的方法,其中对于氧浓度小于7ppma,氮浓度为1×1013至1×1014原子/厘米2的硅单晶晶片进行热处理, cm3,其是通过Czochralski法生长的V型硅单晶锭,在非氮化气氛中在1150〜1300℃下反应1〜120分钟。 结果,制造低成本硅单晶晶片的方法可以通过使用通过CZ方法制造的V区晶片适用于IGBT,该V型晶片可以通过制造大量具有直径增加的方式 没有缺陷并且通过提供径向电阻率分布,其基本上等于实施中子辐射时的径向电阻率分布,而不执行中子照射。
    • 6. 发明申请
    • METHOD FOR MANUFACTURING SILICON SINGLE CRYSTAL WAFER AND ANNEALED WAFER
    • 制造硅单晶和平面波的方法
    • US20130264685A1
    • 2013-10-10
    • US13993810
    • 2012-01-06
    • Wei Feng QuFumio TaharaYuuki OoiShu Sugisawa
    • Wei Feng QuFumio TaharaYuuki OoiShu Sugisawa
    • C30B33/02H01L29/32
    • C30B33/02C30B29/06H01L29/32
    • The present invention provides a method for manufacturing a silicon single crystal wafer, in which a heat treatment is performed with respect to a silicon single crystal wafer having oxygen concentration of less than 7 ppma and nitrogen concentration of 1×1013 to 1×1014 atoms/cm3, which is obtained from a V-region silicon single crystal ingot grown by the Czochralski method, in a non-nitriding atmosphere at 1150 to 1300° C. for 1 to 120 minutes. As a result, a method for manufacturing a low-cost silicon single crystal wafer which is applicable to an IGBT by using a V-region wafer that is manufactured by the CZ method which can cope with an increase in diameter, by making a bulk have no defects and by providing a radial resistivity distribution, which is substantially equal to that when the neutron irradiation is effected, without performing the neutron irradiation is provided.
    • 本发明提供了一种制造硅单晶晶片的方法,其中对于氧浓度小于7ppma,氮浓度为1×1013至1×1014原子/厘米2的硅单晶晶片进行热处理, cm3,其是通过Czochralski法生长的V型硅单晶锭,在非氮化气氛中在1150〜1300℃下反应1〜120分钟。 结果,制造低成本硅单晶晶片的方法可以通过使用通过CZ方法制造的V区晶片适用于IGBT,该V型晶片可以通过制造大量具有直径增加的方式 没有缺陷并且通过提供径向电阻率分布,其基本上等于实施中子辐射时的径向电阻率分布,而不执行中子照射。
    • 7. 发明申请
    • METHOD FOR DETECTING CRYSTAL DEFECTS
    • 检测晶体缺陷的方法
    • US20140119399A1
    • 2014-05-01
    • US14124827
    • 2012-06-18
    • Wei Feng QuFumio TaharaYuuki Ooi
    • Wei Feng QuFumio TaharaYuuki Ooi
    • G01N1/28
    • G01N1/28H01L22/12H01L22/24
    • A method for detecting a crystal defect in a silicon single crystal wafer doped with nitrogen, the silicon single crystal wafer whose initial oxygen concentration is 8 ppma (JEIDA) or lower. The method further includes the steps of: making a crystal defect of defect size of 25 nm or smaller apparent and detectable by implanting oxygen into the crystal defect by performing heat treatment on the silicon single crystal wafer in an oxygen atmosphere; and detecting the crystal defect of the silicon single crystal wafer after the heat treatment temperature is set such that, when the ratio between the oxygen solid solubility and the initial oxygen concentration of the silicon single crystal wafer heat treatment is set at α=the oxygen solid solubility/the initial oxygen concentration, α falls within a range from 1 to 3.
    • 一种用于检测掺杂有氮的硅单晶晶片中的晶体缺陷的方法,其初始氧浓度为8ppma(JEIDA)或更低的硅单晶晶片。 该方法还包括以下步骤:通过在氧气氛中对硅单晶晶片进行热处理,使缺陷尺寸为25nm或更小的晶体缺陷明显并且可通过将氧注入晶体缺陷来检测; 并且在热处理温度被设定为使得当硅固溶度和硅单晶晶片热处理的初始氧浓度之比设定为α=氧固体时,检测硅单晶晶片的晶体缺陷 溶解度/初始氧浓度α在1〜3的范围内。