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:
Apr. 17, 1990
Filed:
Nov. 18, 1988
Robert J McIntyre, Quebec, CA;
Ramon U Martinelli, Hightstown, NJ (US);
General Electric Company, Schenectady, NY (US);
Abstract
A photoconductive detector comprises a substrate layer of semiconductor material of a first conductivity type substantially transparent of light at the wavelength to be detected and doped sufficiently to provide ohmic contact to the photoconductive active region overlying said substrate layer. The active region comprises a body of undoped semiconductor material absorptive of light at the wavelength to be detected, having first and second major surfaces. The substrate layer serves as a first ohmic contact for the entire first major surface of the active region and a metal or metal alloy serves as a second ohmic contact overlying the entire second major surface of said active region.