Stacked multi-junction solar cell

US11881532B2 · kind B2 · utility

Assignee

• Azur Space Solar Power GmbH · DE

Inventors

• Wolfgang KOESTLER · Heilbronn, DE
• Alexander Frey · Lappersdorf, DE

Key dates

• Filing date: Nov 23, 2020
• Grant date: Jan 23, 2024
• Expiry date: Nov 23, 2040

Classification

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

Abstract

A stacked multi-junction solar cell with a front side contacted through the rear side and having a solar cell stack having a Ge substrate layer, a Ge subcell, and at least two III-V subcells, with a through contact opening, a front terminal contact, a rear terminal contact, an antireflection layer formed on a part of the front side of the multi-junction solar cell, a dielectric insulating layer, and a contact layer. The dielectric insulating layer covers the antireflection layer, an edge region of a top of the front terminal contact, a lateral surface of the through contact opening, and a region of the rear side of the solar cell stack adjacent to the through contact opening. The contact layer from a region of the top of the front terminal contact that is not covered by the dielectric insulating layer through the through contact opening to the rear side.