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Photovoltaische Solarzelle und Verfahren zum Herstellen einer metallischen Kontaktierung einer photovolatischen Solarzelle

PHOTOVOLTAIC SOLAR CELL AND METHOD FOR PRODUCING A METALLIC CONTACT-CONNECTION OF A PHOTOVOLTAIC SOLAR CELL
 
: Kumm, Julia; Samadi, Hassan; Reinwand, Dirk; Wolke, Winfried; Hartmann, Philip

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Frontpage ()

DE 102013219560 A1: 20130927
German
Patent, Electronic Publication
Fraunhofer ISE ()

Abstract
The invention relates to a method for producing a metallic contact-connection of a photovoltaic solar cell, comprising the following method steps: A providing a semiconductor substrate and B applying an aluminum-containing contact-connection layer indirectly or directly to a side of the semiconductor substrate. The invention is characterized in that in a method step C a diffusion barrier layer, which acts as a diffusion barrier at least with respect to aluminum, is applied indirectly or directly to the contact-connection layer, and in a method step D a solderable layer composed of a solderable material is applied indirectly or directly to the diffusion barrier layer, and in that the diffusion barrier layer and the contact-connection layer are applied by means of a PVD method.

: http://publica.fraunhofer.de/documents/N-337532.html