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:
Mar. 07, 2017
Filed:
Aug. 04, 2015
Applicant:
Magnolia Solar, Inc., Woburn, MA (US);
Inventors:
Roger E. Welser, Providence, RI (US);
Ashok K. Sood, Brookline, MA (US);
Assignee:
Magnolia Solar, Inc., Woburn, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/18 (2006.01); H01L 31/0445 (2014.01); H01L 31/048 (2014.01); H01L 31/0216 (2014.01); H01L 31/0224 (2006.01); H01L 31/0203 (2014.01);
U.S. Cl.
CPC ...
H01L 31/1884 (2013.01); H01L 31/0203 (2013.01); H01L 31/02168 (2013.01); H01L 31/022425 (2013.01); H01L 31/022475 (2013.01); H01L 31/048 (2013.01); H01L 31/0445 (2014.12);
Abstract
Material and antireflection structure and methods of manufacturing are provided that produce efficient photovoltaic power conversion from thin film solar cells on flexible substrates. Step-graded antireflection structures are placed on the front of the device structure. Materials of different energy gap are combined in the depletion region of at least one of the semiconductor junctions within the thin film device structure. Conductive, low refractive index layers are deposited on the bottom of the thin film device structure to form an omni-directional back reflector contact.