Stay flexible! New research findings on the fracture behavior of molybdenum films.

Molybdenum thin films in flexible solar cells and displays need to be flexible without fracturing. In cooperation with the Montan University in Leoben, Plansee is working on improving the ductility of molybdenum and has already been able to achieve some important successes. The findings of this collaboration will be showcased in a poster presentation at the EUPVSEC Conference on 22 June.

Typically, molybdenum thin films are very brittle, and easily fracture under bending stress. This property is critical if the films are used in flexible solar cells and flexible displays. As materials and thin-film specialists, we at Plansee, together with the University of Leoben, want to conduct in-depth research into this issue. Professor Christian Mitterer from the University of Leoben, Dr. Jörg Winkler, head of development at Plansee and Tanja Jörg, Ph. D. student at the Montan University in Leoben, are pressing ahead with the project. Deposition of molybdenum films on polyimide film in an industrial sputtering system and characterization of mechanical properties including stress measurements have allowed initial conclusions to be drawn: Adapted deposition conditions and a reduction in the film thickness made it possible to manufacture significantly more flexible molybdenum films.

Find out more: At our poster presentation at the EUPVSEC Conference on 22 June at 13:30 (poster 3CV.2.22). For more information on the conference program, visit

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