Patent · US Active

Method for backside-contacting a silicon solar cell, silicon solar cell and silicon solar module

US9252300B2 · kind B2 · utility

2Cited by

1References

12Claims

0Family size

Assignee

SOLARWORLD INNOVATIONS GMBH · DE

Inventors

Wieland Pethe · Dresden, DE
Harald Hahn · Dresden, DE
Kristian Schlegel · Zwickau, DE
Torsten Weber · Leichlingen, DE
Martin Kutzer · Kohren-Sahlis, DE

Key dates

Filing date	May 4, 2012
Grant date	Feb 2, 2016
Priority date	—
Expiry date	Jan 29, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/50
WIPO fieldSemiconductors
WIPO sectorElectrical engineering

Abstract

For contacting a silicon solar cell a pre-processed silicon substrate with a frontside and a backside is provided. Then, aluminum is deposited on the backside of the pre-processed silicon substrate, wherein aluminum-free regions remain on the backside. Then, a silver-free layer suitable for soldering on the backside of the silicon substrate is deposited so that the silver-free layer suitable for soldering covers at least the aluminum-free regions on the backside.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.