FoilMet®-connect: Upgrading adhesion by the application of laser metal bonding

The demand for cost-effective and highly efficient solar cells is increased by the need to shift energy production to renewables. The FoilMet-Connect technology offers a way to meet this demand by achieving higher cell efficiencies while utilizing low-cost aluminum foil for large parts of the rear e...

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Bibliographic Details
Published inAIP conference proceedings Vol. 2709; no. 1
Main Authors Paschen, Jan, Nägele, Andreas, John, Oliver, Emanuel, Gernot, Nekarda, Jan
Format Journal Article
LanguageEnglish
Published 15.11.2022
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Summary:The demand for cost-effective and highly efficient solar cells is increased by the need to shift energy production to renewables. The FoilMet-Connect technology offers a way to meet this demand by achieving higher cell efficiencies while utilizing low-cost aluminum foil for large parts of the rear electrode. This is realized by the reduction of the screen-printed area to small disks, which are electrically connected to the aluminum foil via laser welding. The necessary adhesion is achieved by additionally bonding the foil to the rear passivation of the cell. The FoilMet-Connect cells presented in this work achieve an efficiency of more than 22% in IV measurements, 0.25%abs more than the purely screen-printed reference.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0126335