Philippe Wyss

Cette personne n’est plus à l’EPFL

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Publications associées (18)

Crystalline Silicon Solar Cells With Coannealed Electron- and Hole-Selective SiCx Passivating Contacts

Christophe Ballif, Franz-Josef Haug, Quentin Thomas Jeangros, Andrea Ingenito, Monica Morales Masis, Gizem Nogay, Philipp Friedrich Hermann Löper, Philippe Wyss, Oscar Esteban Rucavado Leandro, Josua Andreas Stückelberger

We present electron- and hole-selective passivating contacts based on wet-chemically grown interfacial SiOx and overlying in-situ doped silicon carbide (SiCx) deposited by plasma-enhanced chemical vapor deposition. After annealing at 850 degrees C, excelle ...

2018

A passivating contact concept compatible with a short thermal treatment

Christophe Ballif, Franz-Josef Haug, Andrea Ingenito, Matthieu Despeisse, Gizem Nogay, Philippe Wyss, Josua Andreas Stückelberger

In this study we present a boron-doped silicon carbide layers as a hole-selective contact which is compatible with short annealing time (typically < 1 minute) as the one used for firing of metal pastes. The application of such layers on symmetrically proce ...

IEEE2018

Interplay of annealing temperature and doping in hole selective rear contacts based on silicon-rich silicon-carbide thin films

Christophe Ballif, Gizem Nogay, Franz-Josef Haug, Matthieu Despeisse, Monica Morales Masis, Philipp Friedrich Hermann Löper, Philippe Wyss, Oscar Esteban Rucavado Leandro, Josua Andreas Stückelberger

We present a detailed optimization of a hole selective rear contact for p-type crystalline silicon solar cells which relies on full-area processes and provides full-area passivation. The passivating hole-contact is based on a layer stack comprising a chemi ...

Elsevier Science Bv2017

Solar photovoltaic module

Christophe Ballif, Franz-Josef Haug, Philipp Friedrich Hermann Löper, Philippe Wyss, Josua Andreas Stückelberger

In the present invention a new solar photovoltaic module is proposed comprising a solar cell comprising a silicon layer having a first (1 a) surface and a second surface (1a) opposite to said first surface. The solar cell further comprises a passivating la ...

2017

Passivating electron contact based on highly crystalline nanostructured silicon oxide layers for silicon solar cells

Christophe Ballif, Franz-Josef Haug, Quentin Thomas Jeangros, Xavier Niquille, Matthieu Despeisse, Philippe Wyss, Gizem Nogay, Martin Ledinsky, Philipp Friedrich Hermann Löper, Josua Andreas Stückelberger

We present a novel passivating contact structure based on a nanostructured silicon-based layer. Traditional poly-Si junctions feature excellent junction characteristics but their optical absorption induces current losses when applied to the solar cell fron ...

Elsevier Science Bv2016

Silicon-Rich Silicon Carbide Hole-Selective Rear Contacts for Crystalline-Silicon-Based Solar Cells

Christophe Ballif, Franz-Josef Haug, Quentin Thomas Jeangros, Xavier Niquille, Matthieu Despeisse, Gizem Nogay, Philipp Friedrich Hermann Löper, Philippe Wyss, Josua Andreas Stückelberger

The use of passivating contacts compatible with typical homojunction thermal processes is one of the most promising approaches to realizing high-efficiency silicon solar cells. In this work, we investigate an alternative rear-passivating contact targeting ...

2016

Influence of cations of the electrolyte on the performance and stability of dye sensitized solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Thomas Moehl, Philippe Wyss

The electrolyte is one of the key components for DSC and its properties have great influence on the photo-conversion efficiency and stability of the devices. Five new low volatile electrolytes containing 3-methoxypropionitrile (MPN) as solvent were prepare ...

Royal Society of Chemistry2012

Iron Resonant Photoemission Spectroscopy on Anodized Hematite Points to Electron Hole Doping during Anodization

Michael Graetzel, Kevin Sivula, Li Zhang, Artur Braun, Philippe Wyss, Qianli Chen, Jin Guo

Anodization of a-Fe2O3 (hematite) electrodes in alkaline electrolyte under constant potential conditions the electrode surface in a way that an additional current wave occurs in the cyclic voltammogram. The energy position of this current wave is closely b ...

Wiley-Blackwell2012

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Crystalline Silicon Solar Cells With Coannealed Electron- and Hole-Selective SiCx Passivating Contacts

2018

Interplay of annealing temperature and doping in hole selective rear contacts based on silicon-rich silicon-carbide thin films

Elsevier Science Bv2017