Sylvain Nicolay

Cette personne a quitté l’EPFL

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Publications associées (66)

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I-2 vapor-induced degradation of formamidinium lead iodide based perovskite solar cells under heat-light soaking conditions

Christophe Ballif, Quentin Thomas Jeangros, Sylvain Nicolay, Jérémie Werner, Fan Fu, Peter Joseph Fiala, Adriana Paracchino

Over the last years, the operational stability of perovskite solar cells has been significantly improved by compositional engineering, interface modification, and improved encapsulation techniques. However, irreversible degradation is still ubiquitously ob ...

2019

Laser-Scribing Patterning for the Production of Organometallic Halide Perovskite Solar Modules

Christophe Ballif, Jun Ho Yum, Laurent Fabien Hubert Sansonnens, Soo-Jin Moon, Sylvain Nicolay, Arnaud Walter

Efficiencies of solar cells based on organometallic halide perovskite absorber material have dramatically increased over the past few years. Most of efficiencies reported so far have, however, been obtained on solar cells with very small lab-scale area of ...

Ieee-Inst Electrical Electronics Engineers Inc2015

Rear textured p-type high temperature passivating contacts and their implementation in perovskite/silicon tandem cells

Christophe Ballif, Sylvain Nicolay, Quentin Thomas Jeangros, Antoine Descoeudres, Soo-Jin Moon, Andrea Ingenito, Philippe Wyss, Arnaud Walter

Silicon solar cells based on high temperature passivating contacts are becoming mainstream in the photovoltaic industry. Here, we developed a high-quality boron-doped poly-silicon hole contact. When combined with a co-processed phosphorus-doped poly-silico ...

Royal Soc Chemistry2023

Geometric light trapping for high efficiency thin film silicon solar cells

Christophe Ballif, Franz-Josef Haug, Matthieu Despeisse, Grégory Bugnon, Corsin Battaglia, Sylvain Nicolay, Jordi Escarre Palou, Laura Ding

The imprinting of random square based pyramidal textures with micrometric scale at the air/glass interface of thin film silicon solar cells is presented as an efficient alternative to anti-reflective coatings to minimize reflection losses at the cell entra ...

Elsevier2012

Midinfrared intersubband absorption in lattice-matched AlInN/GaN multiple quantum wells

Nicolas Grandjean, Jean-François Carlin, Marc Ilegems, Eric Feltin, Raphaël Butté, Sylvain Nicolay

We report the observation of midinfrared intersubband (ISB) absorption in nearly lattice-matched AlInN/GaN multiple-quantum-wells. A clear absorption peak is observed around 3 mu m involving transitions from the conduction band ground state to the first ex ...

2005

Progresses in III-nitride distributed Bragg reflectors and microcavities using AlInN/GaN materials

Nicolas Grandjean, Jean-François Carlin, Eric Feltin, Raphaël Butté, Sylvain Nicolay, Gabriel Christmann, Julien Dorsaz

We propose to use lattice-matched AlInN/GaN to replace the Al(Ga)N/GaN material system for III-nitride Bragg reflectors, despite the poor material quality of AlInN reported until very recently. We report an improvement of AlInN material that allowed for su ...

2005