In Deutschland landen jährlich circa Zehntausend Tonnen Silizium in alten Photovoltaik-Modulen auf dem Recyclingmarkt, ab 2029 werden es mehrere hunderttausend Tonnen pro Jahr sein. Aktuell werden von Altmodulen nur das Aluminium, Glas und Kupfer neu aufbereitet, nicht aber die Silizium-Solarzellen. Um auch dieses Material weiter nutzen zu können, haben Forscherinnen und Forscher des Fraunhofer-Center für Silizium-Photovoltaik CSP in Halle (Saale) und des Fraunhofer-Instituts für Solare Energiesysteme ISE gemeinsam mit dem größten deutschen Recyclingunternehmen für PV-Module, der Reiling GmbH & Co. KG, eine Lösung entwickelt: Das Silizium der Module wurde im industriellen Maßstab wiederverwertet und zur Herstellung neuer PERC-Solarzellen genutzt.
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