发明名称 Method For Evaluating Dopant Contamination Of Semiconductor Wafer
摘要 The present invention provides a method for evaluating dopant contamination of a semiconductor wafer, wherein a resistivity of a bulk portion of the semiconductor wafer is measured by an eddy current method, a resistivity in a surface layer of the semiconductor wafer is measured by a surface photovoltage method, and an amount of dopant contamination of the semiconductor wafer is calculated from a difference between a value of the resistivity of the bulk portion measured by the eddy current method and a value of the resistivity in the surface layer measured by the surface photovoltage method. As a result of this, it is possible to provide the method for evaluating dopant contamination of a semiconductor wafer, which can measure the amount of dopant contamination of a whole surface layer of the semiconductor wafer without contact, nondestructively, and accurately.
申请公布号 US2008108155(A1) 申请公布日期 2008.05.08
申请号 US20060886059 申请日期 2006.02.06
申请人 SHIN-ETSU HANDOTAI CO., LTD. 发明人 NAGOYA TAKATOSHI
分类号 H01L21/66 主分类号 H01L21/66
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