Publications de Léo Duchêne | EPFL Graph Search

Vapor Transport Deposition of Methylammonium Iodide for Perovskite Solar Cells

Christophe Ballif, Quentin Thomas Jeangros, Cédric Bucher, Florent Sahli, Léo Duchêne, Björn Niesen, Aymeric Michel Schafflützel, Nathanaël Miaz, Quentin Jean-Marie Armand Guesnay, Niccolo Salsi

Vapor-based processes are promising options to deposit metal halide perovskite solar cells in an industrial environment due to their ability to deposit uniform layers over large areas in a controlled environment without resorting to the use of (possibly to ...

2021

4 V room-temperature all-solid-state sodium battery enabled by a passivating cathode/hydroborate solid electrolyte interface

Corsin Battaglia, Léo Duchêne, David Reber

Designing solid electrolytes for all-solid-state-batteries that can withstand the extreme electrochemical conditions in contact with an alkali metal anode and a high-voltage cathode is challenging, especially when the battery is cycled beyond 4 V. Here we ...

ROYAL SOC CHEMISTRY2020

Physical vapour deposition of cyanine salts and their first application in organic electronic devices

Frank Nüesch, Léo Duchêne, Antonia Neels, Donatas Gesevicius, Jakob Heier

A symmetrical trimethine indocyanine dye chromophore was modified with the bistriflylimide anion to study the changes in Coulomb interactions, thermal stability and the volatility of the organic salt. The bulky bistriflylimide anion minimizes electrostatic ...

Royal Society of Chemistry2019

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

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

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

Quantum dots in the GaAs/AlxGa1-xAs core-shell nanowires: Statistical occurrence as a function of the shell thickness

Yannik Fontana, Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Léo Duchêne, Sonia Conesa Boj, Federico Matteini, Luca Francaviglia

Quantum dots (QDs) embedded in nanowires represent one of the most promising technologies for applications in quantum photonics. Self-assembled bottom-up fabrication is attractive to overcome the technological challenges involved in a top-down approach, bu ...

American Institute of Physics2015