Stacked multi-junction solar cell

US11164983B2 · kind B2 · utility

Assignee

• Azur Space Solar Power GmbH · DE

Inventors

• Matthias Meusel · Heilbronn, DE
• Rosalinda VAN LEEST · Heilbronn, DE
• Alexander Berg · Mannheim, DE
• Lilli Horst · Schwäbisch Hall, DE

Key dates

• Filing date: Jan 28, 2020
• Grant date: Nov 2, 2021
• Expiry date: Jan 28, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/544

Abstract

A stacked multi-junction solar cell with a first subcell having a top and a bottom, and with a second subcell. The first subcell is implemented as the topmost subcell so that incident light first strikes the top of the first subcell and after that strikes the second subcell through the bottom. A first tunnel diode is arranged between the bottom of the first subcell and the second subcell. A window layer is arranged on the top of the first subcell, and the band gap of the window layer is larger than the band gap of the first subcell. A cover layer is arranged below metal fingers and above the window layer, and an additional layer is arranged below the cover layer and above the window layer. A thickness of the additional layer is less than the thickness of the window layer.