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. 19, 2013
Filed:
Nov. 30, 2011
William J. Schaffer, Atascadero, CA (US);
Luke W. Jacobson, Arvada, CO (US);
Scott L. French, Superior, CO (US);
Eric Boese, Westminster, CO (US);
Robert A. Garber, Denver, CO (US);
William J. Schaffer, Atascadero, CA (US);
Luke W. Jacobson, Arvada, CO (US);
Scott L. French, Superior, CO (US);
Eric Boese, Westminster, CO (US);
Robert A. Garber, Denver, CO (US);
Primestar Solar, Inc., Arvada, CO (US);
Abstract
Methods for isolating thin film photovoltaic cells on a superstrate are provided. The method includes focusing a laser beam onto a first surface of the superstrate to remove a thin film stack positioned on a second surface of the superstrate, and directing the laser beam across the first surface of the superstrate to form an isolation scribe that is substantially free from the thin film stack. The thin film stack can include a transparent conductive oxide layer on the second surface, an n-type window layer on the transparent conductive oxide layer, and an absorber layer on the n-type window layer. The laser beam can have a laser wavelength of about 370 nm or less, and/or can have a laser wavelength such that the transparent conductive oxide layer absorbs at least about 80% of the laser beam at the laser wavelength.