ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,720,875, issued on Aug. 25, was assigned to SolAero Technologies Corp. (Albuquerque, N.M.).
"Multijunction solar cell" was invented by John Hart (Albuquerque, N.M.), Daniel Derkacs (Albuquerque, N.M.), Zachary Bittner (Albuquerque, N.M.) and Andrew Espenlaub (Albuquerque, N.M.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multijunction solar cell including an upper first solar subcell; a second solar subcell disposed under and adjacent to the upper first solar subcell; and a third solar subcell disposed under and adjacent to the second solar subcell; wherein at least one of the base and emitter layers of at least a particular solar subcell has a grad...