Antoine Descoeudres

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Related publications (32)

Simple processing of back-contacted silicon heterojunction solar cells using selective-area crystalline growth

Christophe Ballif, Quentin Thomas Jeangros, Antoine Descoeudres, Gabriel Christmann, Matthieu Despeisse, Sylvain Nicolay, Bertrand Yves Paul Paviet-Salomon, Jan Haschke, Stefaan De Wolf, Johannes Peter Seif

For crystalline-silicon solar cells, voltages close to the theoretical limit are nowadays readily achievable when using passivating contacts. Conversely, maximal current generation requires the integration of the electron and hole contacts at the back of t ...

Nature Publishing Group2017

Realization of GaInP/Si Dual-Junction Solar Cells With 29.8% 1-Sun Efficiency

Christophe Ballif, Antoine Descoeudres, Antonin Faes, Matthieu Despeisse, Jacques Levrat, Stephanie Essig, Bertrand Yves Paul Paviet-Salomon, Nicolas Badel, Loris Barraud

Combining a Si solar cell with a high-bandgap top cell reduces the thermalization losses in the short wavelength and enables theoretical 1-sun efficiencies far over 30%. We have investigated the fabrication and optimization of Si-based tandem solar cells w ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Asymmetric band offsets in silicon heterojunction solar cells: Impact on device performance

Christophe Ballif, Antoine Descoeudres, Stefaan De Wolf, Johannes Peter Seif, Loris Barraud, Ugur Deneb Menda

Amorphous/crystalline silicon interfaces feature considerably larger valence than conduction band offsets. In this article, we analyze the impact of such band offset asymmetry on the performance of silicon heterojunction solar cells. To this end, we use si ...

Amer Inst Physics2016

Strategies for Doped Nanocrystalline Silicon Integration in Silicon Heterojunction Solar Cells

Christophe Ballif, Aïcha Hessler-Wyser, Antoine Descoeudres, Jonas Geissbühler, Gizem Nogay, Stefaan De Wolf, Martin Ledinsky, Martial Duchamp, Johannes Peter Seif, Simon Hänni

Carrier collection in silicon heterojunction (SHJ) solar cells is usually achieved by doped amorphous silicon layers of a few nanometers, deposited at opposite sides of the crystalline silicon wafer. These layers are often defect-rich, resulting in modest ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Light-induced performance increase of silicon heterojunction solar cells

Christophe Ballif, Antoine Descoeudres, Jacques Levrat, Matthieu Despeisse, Sylvain Nicolay, Gabriel Christmann, Stefaan De Wolf, Eiji Kobayashi

Silicon heterojunction solar cells consist of crystalline silicon (c-Si) wafers coated with doped/intrinsic hydrogenated amorphous silicon (a-Si:H) bilayers for passivating-contact formation. Here, we unambiguously demonstrate that carrier injection either ...

American Institute of Physics2016

Manufacturing 100-mu m-thick silicon solar cells with efficiencies greater than 20% in a pilot production line

Christophe Ballif, Antoine Descoeudres, Stefaan De Wolf

Reducing wafer thickness while increasing power conversion efficiency is the most effective way to reduce cost per Watt of a silicon photovoltaic module. Within the European project 20 percent efficiency on less than 100-mu m-thick, industrially feasible c ...

Wiley-VCH Verlag2015

Back-Contacted Silicon Heterojunction Solar Cells: Optical-Loss Analysis and Mitigation

Christophe Ballif, Antoine Descoeudres, Matthieu Despeisse, Bertrand Yves Paul Paviet-Salomon, Sylvain Nicolay, Stefaan De Wolf, Andrea Tomasi, Loris Barraud

We analyze the optical losses that occur in interdigitated back-contacted amorphous/crystalline silicon heterojunction solar cells. We show that in our devices, the main loss mechanisms are similar to those of two-side contacted heterojunction solar cells. ...

Ieee-Inst Electrical Electronics Engineers Inc2015

Silicon Heterojunction Solar Cells With Copper-Plated Grid Electrodes: Status and Comparison With Silver Thick-Film Techniques

Christophe Ballif, Quentin Thomas Jeangros, Antoine Descoeudres, Antonin Faes, Jonas Geissbühler, Nicolas Badel, Matthieu Despeisse, Andrea Tomasi, Stefaan De Wolf, Loris Barraud

Copper electroplating is investigated and compared with common silver printing techniques for the front metallization of silicon heterojunction solar cells. We achieve smaller feature sizes by electroplating, significantly reducing optical shadowing losses ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Scanning Laser-Beam-Induced Current Measurements of Lateral Transport Near-Junction Defects in Silicon Heterojunction Solar Cells

Christophe Ballif, Antoine Descoeudres, Stefaan De Wolf

We report the results of scanning laser-beam-induced current (LBIC) measurements on silicon heterojunction solar cells that indicate the length scale over which photogenerated carriers are sensitive to local defects at the amorphous silicon/crystalline sil ...

Ieee-Inst Electrical Electronics Engineers Inc2014

Amorphous silicon oxide window layers for high-efficiency silicon heterojunction solar cells

Christophe Ballif, Antoine Descoeudres, Stefaan De Wolf, Johannes Peter Seif

In amorphous/crystalline silicon heterojunction solar cells, optical losses can be mitigated by replacing the amorphous silicon films by wider bandgap amorphous silicon oxide layers. In this article, we use stacks of intrinsic amorphous silicon and amorpho ...

American Institute of Physics2014

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Silicon Heterojunction Solar Cells With Copper-Plated Grid Electrodes: Status and Comparison With Silver Thick-Film Techniques

Christophe Ballif, Quentin Thomas Jeangros, Antoine Descoeudres, Antonin Faes, Jonas Geissbühler, Nicolas Badel, Matthieu Despeisse, Andrea Tomasi, Stefaan De Wolf, Loris Barraud

Ieee-Inst Electrical Electronics Engineers Inc2014

Scanning Laser-Beam-Induced Current Measurements of Lateral Transport Near-Junction Defects in Silicon Heterojunction Solar Cells

Christophe Ballif, Antoine Descoeudres, Stefaan De Wolf

Ieee-Inst Electrical Electronics Engineers Inc2014