发明名称 |
Method for predicting density of micro crystal defects in semiconductor element from silicon wafer used in the manufacture of the element, and infrared absorption measurement apparatus for this method |
摘要 |
In a method for predicting a density of micro crystal defects to be generated in a semiconductor element, an infrared absorption spectrum associated with a silicon wafer, which is used for the manufacture of the semiconductor element, is formed by a spectrum forming system. The spectrum has a first oxygen absorption peak at the wavenumber range of 1150 to 1050 cm-1 and a second oxygen absorption peak at 530 to 500 cm-1. First and second coefficients indicating oxygen concentrations at the first and second peaks are read by a reading unit. The density of the micro crystal defects are predicted by using a ratio of the first and second coefficients as a monitor.
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申请公布号 |
US4862000(A) |
申请公布日期 |
1989.08.29 |
申请号 |
US19870015039 |
申请日期 |
1987.02.17 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
KUBOTA, ATSUKO;MATSUSHITA, YOSHIAKI;OHWADA, YOSHIAKI |
分类号 |
G01N21/35;G01N21/95 |
主分类号 |
G01N21/35 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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