Solar cell and method for producing same

US9231125B2 · kind B2 · utility

Assignee

• HANWHA Q CELLS GMBH · DE

Inventors

• Andrey Stekolnikov · Leipzig, DE
• Robert Seguin · Berlin, DE
• Maximilian Scherff · Dortmund, DE
• Peter Engelhart · Zörbig, DE
• Matthias Heimann · Dresden, DE
• Til Bartel · Berlin, DE
• Markus Träger · Bitterfeld-Wolfen, DE
• Max Köntopp · Bitterfeld-Wolfen, DE

Key dates

• Filing date: Jun 26, 2012
• Grant date: Jan 5, 2016
• Expiry date: Sep 15, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/547

Abstract

A solar cell includes a semiconductor wafer, at least one dielectric layer arranged on the semiconductor wafer, a metal layer arranged on the dielectric layer, and a contact structure arranged in the dielectric layer such that the contact structure provides an electrical connection between the metal layer and the semiconductor wafer. The contact structure has at least one first structure having a minimum dimension and at least one second structure having a maximum dimension, wherein the minimum dimension and the maximum dimension are defined along a surface of the semiconductor wafer and the minimum dimension of the first structure is greater than the maximum dimension of the second structure.