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:
Sep. 27, 1988
Filed:
Sep. 14, 1987
Applicant:
Inventors:
Lawrence D Woolf, Carlsbad, CA (US);
John C Bass, La Jolla, CA (US);
Assignee:
GA Technologies, Inc., San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
136256 ; 136259 ; 136262 ; 437-5 ; 357 30 ;
Abstract
A cell for using solar radiation to generate electrical power comprises a direct band gap (or high absorption coefficient) substrate which is formed with at least one hole that extends from one side of the substrate to the other side of the substrate. A p-n junction formed with an emitter and a base is joined to one side of the substrate with the hole allowing means to make electrical contact with the base. A metallic layer is extended through the hole into electrical contact with the base to establish a low resistance path between the base of the p-n junction and the back side of the substrate.