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.
Patent No.:
Date of Patent:
Feb. 10, 1987
Filed:
Oct. 29, 1984
Applicant:
Inventors:
Lubomir L Jastrzebski, Plainsboro, NJ (US);
Jacek Lagowski, Wobum, MA (US);
Assignee:
RCA Corporation, Princeton, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
3241 / ; 3241 / ;
Abstract
Crystalline quality of a semiconductor material near its interface with an insulator is evaluated by the photovoltage response to a light beam scanned in wavelength. The crystalline quality is determined from the photovoltage interference pattern in the region of intrinsic excitation of the material. A body of silicon-on-sapphire (SOS) is used to illustrate the method.