Inverted metamorphic multijunction solar cells with doped alpha layer

US10700232B1 · kind B1 · utility

Assignee

• SOLAERO TECHNOLOGIES CORP. · US

Inventors

• Benjamin Cho · Albuquerque, US
• Yong Lin · Albuquerque, US
• Pravin Patel · Albuquerque, US
• Mark A. Stan · Albuquerque, US
• Arthur Cornfeld · Sandia Park, US
• Daniel McGlynn · Albuquerque, US
• Fred Newman · Albuquerque, US

Key dates

• Filing date: Mar 24, 2017
• Grant date: Jun 30, 2020
• Expiry date: Aug 5, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50

Abstract

A multijunction solar cell comprising at least a first subcell and a second subcell, a first alpha layer disposed over said first solar subcell grown using a surfactant and dopant including selenium or tellurium, the first alpha layer configured to prevent threading dislocations from propagating; a metamorphic grading interlayer disposed over and directly adjacent to said first alpha layer; a second alpha layer grown using a surfactant and dopant including selenium or tellurium over and disposed directly adjacent to said grading interlayer to prevent threading dislocations from propagating; wherein the second solar subcell is disposed over said grading interlayer such that the second solar subcell is lattice mismatched with respect to the first solar subcell.