Stacked multi-junction solar cell with a metallization comprising a multilayer system

US11316058B2 · kind B2 · utility

Assignee

• Azur Space Solar Power GmbH · DE

Inventors

• Wolfgang KOESTLER · Heilbronn, DE
• Benjamin HAGEDORN · Weinsberg, DE

Key dates

• Filing date: Aug 31, 2020
• Grant date: Apr 26, 2022
• Expiry date: Aug 31, 2040

Classification

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

Abstract

A stacked multi-junction solar cell with a metallization comprising a multilayer system, wherein the multi-junction solar cell has a germanium substrate forming a bottom side of the multi-junction solar cell, a germanium subcell, and at least two III-V subcells, the multilayer system of the metallization has a first layer, comprising gold and germanium, a second layer comprising titanium, a third layer, comprising palladium or nickel or platinum, with a layer thickness, and at least one metallic fourth layer, and the multilayer system of the metallization covers at least one first and second surface section and is integrally connected to the first and second surface section, wherein the first surface section is formed by the dielectric insulation layer and the second surface section is formed by the germanium substrate or by a III-V layer.