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Fraunhofer-Institut für Lasertechnik ILT Steinbachstr. 15 52074 Aachen, Germany http://www.ilt.fraunhofer.de
Contact Dr. Klaus Bergmann +49 241 8906302
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Fraunhofer-Institut für Lasertechnik ILT

Licht für die kommende Chipgeneration

Preis des Stifterverbands

(PresseBox) (Aachen, )
ie Halbleiterindustrie steht vor einem großen Technologiesprung: Ab 2009 sollen die Schaltungen mit extremer ultravioletter Strahlung belichtet werden. Für ihre EUV-Quelle werden Aachener Forscher mit dem Wissenschaftspreis geehrt.

Seit den Anfängen der Halbleiterfertigung werden Chips durch Belichtung hergestellt. Dabei projiziert ein Stepper Licht durch eine Maske auf die Oberfläche eines Siliziumwafers, der mit Fotolack überzogen ist, und überträgt so die winzigen Strukturen. Um mehr Transistoren auf einem Chip unterzubringen, müssen die Strukturen kleiner werden. Dies zwingt die Hersteller, zu Lichtquellen mit immer kürzerer Wellenlänge überzugehen. Durch ausgefeilte Techniken gelang es sogar, Strukturen zu erzeugen, die kleiner als die Wellenlänge
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