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Simon Hänni
Researcher at École Polytechnique Fédérale de Lausanne
Publications - 33
Citations - 997
Simon Hänni is an academic researcher from École Polytechnique Fédérale de Lausanne. The author has contributed to research in topics: Silicon & Monocrystalline silicon. The author has an hindex of 15, co-authored 33 publications receiving 950 citations. Previous affiliations of Simon Hänni include École Normale Supérieure.
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Journal ArticleDOI
Multiscale transparent electrode architecture for efficient light management and carrier collection in solar cells
Mathieu Boccard,Corsin Battaglia,Simon Hänni,Karin Söderström,Jordi Escarré,Sylvain Nicolay,Fanny Meillaud,Matthieu Despeisse,Christophe Ballif +8 more
TL;DR: This work presents a multiscale electrode architecture that allows it to achieve efficiencies as high as 14.1% with a thin-film silicon tandem solar cell employing only 3 μm of silicon.
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High-efficiency microcrystalline silicon single-junction solar cells
Simon Hänni,Grégory Bugnon,Gaetano Parascandolo,Mathieu Boccard,Jordi Escarré,Matthieu Despeisse,Fanny Meillaud,Christophe Ballif +7 more
TL;DR: In this paper, a new world record efficiency was achieved for single-junction microcrystalline silicon solar cells, with a conversion efficiency of 10.69%, independently confirmed at ISE CalLab PV Cells.
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Optimization of thin film silicon solar cells on highly textured substrates
Matthieu Despeisse,Corsin Battaglia,Mathieu Boccard,Grégory Bugnon,Mathieu Charrière,Peter Cuony,Simon Hänni,Linus Lofgren,Fanny Meillaud,Gaetano Parascandolo,Thomas Söderström,Christophe Ballif +11 more
TL;DR: In this article, nanostructured silicon phases embedded in a silicon oxide matrix were implemented in thin film silicon solar cells and their combination with optimized deposition processes for the silicon intrinsic layers was shown to allow for an increased resilience of the cell design to the substrate texture, with high electrical properties conserved on rough substrates.
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A New View of Microcrystalline Silicon: The Role of Plasma Processing in Achieving a Dense and Stable Absorber Material for Photovoltaic Applications
Grégory Bugnon,Gaetano Parascandolo,Thomas Söderström,Peter Cuony,Matthieu Despeisse,Simon Hänni,Jakub Holovský,Fanny Meillaud,Christophe Ballif +8 more
TL;DR: In this paper, a qualitative model that explains how plasma processes act on the properties of thin-film silicon solar modules and on related solar cell performance is presented, evidencing the growth of two different material phases.
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Recent advances and remaining challenges in thin-film silicon photovoltaic technology
Fanny Meillaud,Mathieu Boccard,Grégory Bugnon,Matthieu Despeisse,Simon Hänni,Franz-Joseph Haug,J. Persoz,J.-W. Schüttauf,Michael Stuckelberger,Christophe Ballif +9 more
TL;DR: In this paper, the authors present some of the latest achievements and challenges in thin-film silicon photovoltaic (PV) technology based on amorphous and nanocrystalline silicon and their alloys.