Fraunhofer ISE develops 23.4%-efficient PERC solar cells with limited silver amount

A team from Germany's Fraunhofer Institute for Solar Energy Systems has reduced silver consumption in the fabrication of PERC solar cells by screen-printing ultra-fine metallization lines measuring just 14 µm. The resulting solar cell offered remarkable efficiency levels, which were confirmed by Fraunhofer ISE CalLab. Researchers from Germany's Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) developed a reproducible method to make ultra-fine contact fingers measuring just 14 µm. They applied the process in passivated emitter and rear cell (PERC) cell fabrication with the aim of ...

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