Monolithic metamorphic multi-junction solar cell

US11588067B2 · kind B2 · utility

Assignee

• Azur Space Solar Power GmbH · DE

Inventors

• Matthias Meusel · Heilbronn, DE
• Alexander Berg · Mannheim, DE
• Philipp Schroth · Buchenauerhof, DE

Key dates

• Filing date: Jul 12, 2021
• Grant date: Feb 21, 2023
• Expiry date: Jul 12, 2041

Classification

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

Abstract

A monolithic multi-junction solar cell comprising a first III-V subcell and a second III-V subcell and a third III-V subcell and a fourth Ge subcell, wherein the subcells are stacked on top of one another in the specified order, and the first subcell forms the top subcell and a metamorphic buffer is formed between the third subcell and the fourth subcell and all subcells each have an n-doped emitter layer and a p-doped base layer and the emitter doping in the second subcell is lower than the base doping.