Patent ID: 9214580
Filing Date: 2015-12-15
Classification: H01L,Y02E

Abstract:
1. A multi-junction solar cell comprising a plurality of sub-cells, wherein: each of the plurality of sub-cells is lattice matched to adjacent sub-cells; and at least one of the plurality of sub-cells comprises a GaInNAsSb emitter, a GaInNAsSb base adjacent the GaInNAsSb emitter, and an emitter-base junction at an interface between the GaInNAsSb emitter and the GaInNAsSb base, wherein, the GaInNAsSb base comprises a base doping profile characterized by a base dopant concentration that increases with distance from the emitter-base junction; and the GaInNAsSb emitter comprises no doping or an emitter doping profile characterized by an emitter dopant concentration that increases with distance from the emitter-base junction.