The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 26, 2017

Filed:

Nov. 12, 2014
Applicant:

Shin-etsu Handotai Co., Ltd., Tokyo, JP;

Inventors:

Hiroyuki Kamada, Nishigo-mura, JP;

Ryoji Hoshi, Nishigo-mura, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/04 (2006.01); G01N 15/06 (2006.01); H01L 21/66 (2006.01); G01N 27/00 (2006.01); H01L 33/02 (2010.01);
U.S. Cl.
CPC ...
H01L 22/12 (2013.01); G01N 15/06 (2013.01); G01N 27/00 (2013.01); G01N 27/04 (2013.01); G01N 27/041 (2013.01); H01L 22/14 (2013.01); H01L 33/025 (2013.01);
Abstract

A method for evaluating concentration of defect in silicon single crystal substrate, defect being formed by particle beam irradiation in silicon single crystal substrate, including the steps of: measuring a resistivity of silicon single crystal substrate, followed by irradiating silicon single crystal substrate with particle beam, re-measuring resistivity of silicon single crystal substrate after irradiation; determining each carrier concentration in silicon single crystal substrate before and after irradiation on basis of measured results of resistivity before and after particle beam irradiation to calculate rate of change of carrier concentration; and evaluating concentration of VV defect on basis of rate of change of carrier concentration, VV defect being made of a silicon atom vacancy and being formed by particle beam irradiation in silicon single crystal substrate. The method can simply evaluate concentration of VV defect formed in silicon single crystal substrate by particle beam irradiation.


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