Publications by Raphaël Monnard

Paths for maximal light incoupling and excellent electrical performances in silicon heterojunction solar cells

Christophe Ballif, Bertrand Yves Paul Paviet-Salomon, Matthieu Despeisse, Laurie-Lou Senaud, Mathieu Gérard Boccard, Monica Morales Masis, Jan Haschke, Luca Massimiliano Antognini, Jean Cattin, Oscar Esteban Rucavado Leandro

We discuss here optical losses in silicon heterojunction solar cells and strategies to minimize them. Optical losses originate from most non-crystalline-silicon layers involved in the solar cell. A breakdown for typical values is shown evidencing that supp ...

IEEE2019

Highly Conductive and Broadband Transparent Zr-Doped In2O3 as Front Electrode for Solar Cells (vol 8, pg 1202, 2018)

Christophe Ballif, Matthieu Despeisse, Mathieu Gérard Boccard, Monica Morales Masis, Loris Barraud, Jakub Holovsky, Oscar Esteban Rucavado Leandro, Raphaël Monnard

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

Low Temperature p-type Microcrystalline Silicon as Carrier Selective Contact for Silicon Heterojunction Solar Cells

Christophe Ballif, Raphaël Monnard, Mathieu Gérard Boccard, Angela Nicole Fioretti

Silicon heterojunction (SHJ) solar cells have reached record efficiency, particularly in all-back-contacted architectures. Despite this, two-side contacted SHJ cells still suffer from parasitic absorption and series resistance losses in the amorphous silic ...

2019

Silicon Heterojunction Solar Cells on Quasi-mono Wafers

Christophe Ballif, Antoine Descoeudres, Matthieu Despeisse, Mathieu Gérard Boccard, Loris Barraud, Jan Haschke, Raphaël Monnard, Brahim Aissa

We applied hydrogen passivation, gettering and a combination of both to quasi-mono (qm) wafer material to enhance its bulk lifetime and prepared silicon heterojunction (SHJ) solar cells. We find that while our applied hydrogen passivation alone seems not t ...

IEEE2018

Fully textured monolithic perovskite/silicon tandem solar cells with 25.2% power conversion efficiency

Christophe Ballif, Florent Sahli, Quentin Thomas Jeangros, Matthias Wolfgang Bräuninger, Davide Sacchetto, Bertrand Yves Paul Paviet-Salomon, Gianluca Cattaneo, Matthieu Despeisse, Mathieu Gérard Boccard, Sylvain Nicolay

Tandem devices combining perovskite and silicon solar cells are promising candidates to achieve power conversion efficiencies above 30% at reasonable costs. State-of-the-art monolithic two-terminal perovskite/silicon tandem devices have so far featured sil ...

2018

Highly Conductive and Broadband Transparent Zr-Doped In2O3 as Front Electrode for Solar Cells

Christophe Ballif, Matthieu Despeisse, Mathieu Gérard Boccard, Monica Morales Masis, Loris Barraud, Jakub Holovsky, Oscar Esteban Rucavado Leandro, Raphaël Monnard

2018

Silicon oxide treatment to promote crystallinity of p-type microcrystalline layers for silicon heterojunction solar cells

Christophe Ballif, Mathieu Gérard Boccard, Luca Massimiliano Antognini, Raphaël Monnard

AIP Conference Proceedings2018

Nanocrystalline silicon oxide stacks for silicon heterojunction solar cells for hot climates

Christophe Ballif, Jan Haschke, Mathieu Gérard Boccard, Luca Massimiliano Antognini, Jean Cattin, Raphaël Monnard, Brahim Aissa

AIP Publishing2018

Hybrid sequential deposition process for fully textured perovskite/silicon tandem solar cells

Christophe Ballif, Quentin Thomas Jeangros, Davide Sacchetto, Bertrand Yves Paul Paviet-Salomon, Florent Sahli, Arnaud Walter, Gianluca Cattaneo, Matthieu Despeisse, Mathieu Gérard Boccard, Sylvain Nicolay

Tandem solar cells that feature a high-bandgap perovskite cell on top of a lower bandgap silicon cell have the potential to reach efficiencies > 30%. Here, we present a versatile hybrid deposition method that yields conformal perovskite cells directly on t ...

IEEE2018

Improved Optics in Monolithic Perovskite/Silicon Tandem Solar Cells with a Nanocrystalline Silicon Recombination Junction

Christophe Ballif, Florent Sahli, Aïcha Hessler-Wyser, Matthias Wolfgang Bräuninger, Quentin Thomas Jeangros, Bertrand Yves Paul Paviet-Salomon, Matthieu Despeisse, Stefaan De Wolf, Sylvain Nicolay, Björn Niesen

Perovskite/silicon tandem solar cells are increasingly recognized as promi-sing candidates for next-generation photovoltaics with performance beyond the single-junction limit at potentially low production costs. Current designs for monolithic tandems rely ...

2017