![]() Use, distribution, and reproduction in any medium, provided the original work is This is an Open Access article distributed under the terms of the CreativeĬommons Attribution License ( ), which permits unrestricted © Hessmann et al., published by EDP Sciences, 2015 In combination with an epitaxial and layer transfer process a decrease in production costs can be achieved. A flexible band substrate offers the possibility to overcome the area restriction of ingot-based monocrystalline silicon wafers and the feasibility of a roll-to-roll manufacturing. The foils were welded together in order to create the first thin flexible monocrystalline band substrate. These are the first results ever presented for solar cells on welded silicon foils. The cell has an open-circuit voltage of 570 mV, a short-circuit current density of 29.9 mA cm -2 and a fill factor of 67.6%. The aperture area of the cell is 1.00 cm 2. We present a thin-film crystalline silicon solar cell with an AM1.5 efficiency of 11.5% fabricated on welded 50 μm thin silicon foils. ![]() University of Erlangen-Nuremberg, Martensstr. I-MEET: institute Materials for Electronics and Energy Technology, Brabec 1 ,4īavarian Center for Applied Energy Research (ZAE Bayern),ĭepartment of Physics, University of Konstanz, UniversitätsstrīLZ-Bavarian Laser Center, Konrad-Zuse-Str. Maik Thomas Hessmann 1 a, Thomas Kunz 1, Taimoor Ahmad 1, Da Li 1, Stephan Wittmann 1, Arne Riecke 1, Jan Ebser 2, Barbara Terheiden 2, Kristian Cvecek 3, Michael Schmidt 1, Richard Auer 1 and Chistoph J. ![]()
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