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. 04, 1989
Filed:
May. 13, 1987
Applicant:
Inventors:
Salah M Bedair, Raleigh, NC (US);
Robert J Markunas, Chapel Hill, NC (US);
Michael L Timmons, Raleigh, NC (US);
James A Hutchby, Raleigh, NC (US);
John R Hauser, Raleigh, NC (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
136249 ;
Abstract
A multijunction solar cell is disclosed which uses a patterned intercell ohmic connection as the tunnel junction to connect a top solar cell in electrical and optical series with a bottom solar cell. By confining this patterned tunnel junction to shadowed areas directly beneath the top surface metallization grid, the tunnel junction is set free from the requirement that it be transparent and have band gaps greater than or equal to those of the top solar cell.