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Thin Film Solar Cells Based on Single Crystalline Silicon Nanowires
G. Andrä, M. Pietsch, V. Sivakov, T. Stelzner, A. Gawlik, S. Christiansen, F. Falk
Silicon (Si), Thin Film Paste, Nanowire
Advanced Photovoltaics
Subtopic: New Types of Cells and Modules
Event: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain
Session: 1BO.6.3
163 - 167
ISBN: 3-936338-24-8
Paper DOI: 10.4229/23rdEUPVSEC2008-1BO.6.3
0,00 EUR
Document(s): paper


Silicon nanowire thin film solar cells with axial pn-junctions on glass substrates were prepared by two methods. In a bottom up approach the nanowires were grown by the VLS method on a silicon thin film on glass using Au nanotemplates. In a top down method silicon thin films with an appropriate doping profile were etched in a selforganized way so that nanowires form. For comparison cells were prepared by both methods on Si wafers. Resulting I-V-curves of the solar cells are discussed. The highest achieved Voc under AM1.5 illumination was 400 mV in a cell etched into a silicon thin film.