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    • 51. 发明申请
    • MANUFACTURING METHOD OF SEMICONDUCTOR SUBSTRATE AND MANUFACTURING METHOD OF SEMICONDUCTOR DEVICE
    • 半导体基板的制造方法和半导体器件的制造方法
    • US20110244660A1
    • 2011-10-06
    • US13072150
    • 2011-03-25
    • Junichi KOEZUKA
    • Junichi KOEZUKA
    • H01L21/322
    • H01L21/26506H01L21/268H01L21/76254H01L21/84H01L27/1203
    • An object is to provide a manufacturing method of a semiconductor substrate provided with a single crystal semiconductor layer with a surface having a high degree of flatness. Another object is to manufacture a semiconductor device with high reliability by using the semiconductor substrate provided with a single crystal semiconductor layer with a high degree of flatness. In a manufacturing process of a semiconductor substrate, a thin embrittled region containing a large crystal defect is formed in a single crystal semiconductor substrate at a predetermined depth by subjecting the single crystal semiconductor substrate to a rare gas ion irradiation step, a laser irradiation step, and a hydrogen ion irradiation step. Then, by performing a separation heating step, a single crystal semiconductor layer that is on a surface side than the embrittled region is transferred to a base substrate.
    • 本发明的目的是提供具有平坦度高的表面的具有单晶半导体层的半导体衬底的制造方法。 另一个目的是通过使用具有高度平坦度的单晶半导体层的半导体衬底来制造具有高可靠性的半导体器件。 在半导体衬底的制造工艺中,通过对单晶半导体衬底进行稀有气体离子照射步骤,激光照射步骤,在单晶半导体衬底中以预定深度形成含有大晶体缺陷的薄脆化区域, 和氢离子照射步骤。 然后,通过进行分离加热工序,将表面侧的脆性区域的单晶半导体层转移到基板。