Inverted metamorphic multijunction solar cell with two metamorphic layers and homojunction top cell

US9117966B2 · kind B2 · utility

Assignee

• SOLAERO TECHNOLOGIES CORP. · US

Inventors

• Arthur Cornfeld · Sandia Park, US
• John Spann · Albuquerque, US
• Pravin Patel · Albuquerque, US
• Mark A. Stan · Albuquerque, US
• Benjamin Cho · Albuquerque, US
• Paul R. Sharps · Albuquerque, US
• Daniel Aiken · Edgewood, US

Key dates

• Filing date: Feb 21, 2012
• Grant date: Aug 25, 2015
• Expiry date: Aug 28, 2032

Classification

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

Abstract

A multijunction solar cell including an upper first solar subcell, and the base-emitter junction of the upper first solar subcell being a homojunction; a second solar subcell adjacent to said first solar subcell; a third solar subcell adjacent to said second solar subcell. A first graded interlayer is provided adjacent to said third solar subcell. A fourth solar subcell is provided adjacent to said first graded interlayer, said fourth subcell is lattice mismatched with respect to said third subcell. A second graded interlayer is provided adjacent to said fourth solar subcell; and a lower fifth solar subcell is provided adjacent to said second graded interlayer, said lower fifth subcell is lattice mismatched with respect to said fourth subcell.