Tunnel Junctions for Multijunction Solar Cells

Nikhil Jain (Inventor), Myles Steiner (Inventor), John Geisz (Inventor), Emmett Perl (Inventor), Ryan France (Inventor)

Research output: Patent


Tunnel junctions for multijunction solar cells are provided. According to an aspect of the invention, a tunnel junction includes a first layer including p-type AlGaAs, a second layer including n-type GaAs, wherein the second layer is a quantum well, and a third layer including n-type AlGaAs or n-type lattice matched AlGaInP. The quantum well can be GaAs or AlxGaAs with x being more than about 40%, and lattice matched GaInAsNSb in the Eg range of from about 0.8 to about 1.4 eV.
Original languageAmerican English
Patent number11,527,667 B2
Filing date13/12/22
StatePublished - 2022

NREL Publication Number

  • NREL/PT-5900-84855


  • concentration of Al
  • second layer quantum well
  • wavelengths of light


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