发明名称 Semiconductor wafer of single crystalline silicon and process for its manufacture
摘要 Semiconductor wafer of monocrystalline silicon contain fluorine, the fluorine concentration being 1·1010 to 1·1016 atoms/cm3, and is free of agglomerated intrinsic point defects whose diameter is greater than or equal to a critical diameter. The semiconductor wafers are produced by providing a melt of silicon which is doped with fluorine, and crystallizing the melt to form a single crystal which contains fluorine within the range of 1·1010 to 1·1016 atoms/cm3, at a growth rate at which agglomerated intrinsic point defects having a critical diameter or larger would arise if fluorine were not present or present in too small an amount, and separating semiconductor wafers from the single crystal.
申请公布号 US7868325(B2) 申请公布日期 2011.01.11
申请号 US20090372783 申请日期 2009.02.18
申请人 SILTRONIC AG 发明人 VON AMMON WILFRIED
分类号 H01L29/04 主分类号 H01L29/04
代理机构 代理人
主权项
地址