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:
Dec. 21, 2021
Filed:
Feb. 22, 2019
Alliance for Sustainable Energy, Llc, Golden, CO (US);
California Institute of Technology, Pasedena, CA (US);
Ryan Matthew France, Golden, CO (US);
John Franz Geisz, Wheat Ridge, CO (US);
Pilar Espinet-Gonzalez, Pasadena, CA (US);
Alliance for Sustainable Energy, LLC, Golden, CO (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
Distributed Bragg reflectors are incorporated into the compositionally graded buffers of metamorphic solar cells, adding functionality to the buffer without adding cost. The reflection aids in collection in subcells that are optically thin due to low diffusion length, high bulk recombination, radiation hardness, partially-absorbing quantum structures, or simply for cost savings. Performance enhancements are demonstrated in GaAs subcells with QWs, which is beneficial when GaAs is not the ideal bandgap.