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:
Jan. 18, 2022
Filed:
Aug. 31, 2020
Applicant:
Azur Space Solar Power Gmbh, Heilbronn, DE;
Inventors:
Assignee:
AZUR SPACE Solar Power GmbH, Heilbronn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/18 (2006.01); H01L 23/544 (2006.01); H01L 31/0216 (2014.01); H01L 31/0336 (2006.01); H01L 31/0687 (2012.01); H01L 31/078 (2012.01);
U.S. Cl.
CPC ...
H01L 31/1876 (2013.01); H01L 23/544 (2013.01); H01L 31/02167 (2013.01); H01L 31/186 (2013.01); H01L 31/0336 (2013.01); H01L 31/0687 (2013.01); H01L 31/078 (2013.01); H01L 2223/54413 (2013.01);
Abstract
A marking method for applying a unique identification to each individual solar cell stack of a semiconductor wafer, at least comprising the steps: Providing a semiconductor wafer having an upper side and an underside, which comprises a Ge substrate forming the underside; and generating an identification with a unique topography by means of laser ablation, using a first laser, on a surface area of the underside of each solar cell stack of the semiconductor wafer, the surface area being formed in each case by the Ge substrate or by an insulating layer covering the Ge substrate.