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Laser machen Photovoltaik konkurrenzfähig

(PresseBox) (Hannover, )
Strom aus Kohle oder Gas, damit ist irgendwann Schluss. Die Vorräte der fossilen Energieträger sind begrenzt und werden den wachsenden Stromhunger der Welt nicht ewig stillen können. Daher sind Alternativen aus regenerierbaren Quellen gefragt. Eine Möglichkeit bietet die Photovoltaik, also die direkte Umwandlung von Sonnenenergie in Strom.

Noch stellt die Photovoltaik keine echte Konkurrenz dar, sind die Herstellungskosten der Solarzellen bisher doch relativ hoch und auch der Wirkungsgrad industrieller Solarzellen hat noch deutliches Verbesserungspotential. Kostenreduktion und Effizienzsteigerung - mit diesen Zielen werden seit einigen Jahren Laser zur Bearbeitung der Solarzellen einge- setzt, mit Erfolgversprechenden Ergebnissen.

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