Publications de Martial Duchamp

Challenges and Applications to Operando and In Situ TEM Imaging and Spectroscopic Capabilities in a Cryogenic Temperature Range

Vasiliki Tileli, Martial Duchamp, Reinis Ignatans

In this Account, we describe the challenges and promising applications of transmission electron microscopy (TEM) imaging and spectroscopy at cryogenic temperatures. Our work focuses on two areas of application: the delay of electron-beam-induced degradatio ...

AMER CHEMICAL SOC2021

Multi-modal and multi-scale non-local means method to analyze spectroscopic datasets

Vasiliki Tileli, Martial Duchamp

A multi-modal and multi-scale non-local means (M3S-NLM) method is proposed to extract atomically resolved spectroscopic maps from low signal-to-noise (SNR) datasets recorded with a transmission electron microscope. This method improves upon previously test ...

ELSEVIER2019

What Limits Mobility in Hydrogenated Indium Oxide?

Monica Morales Masis, Laura Ding, Michael Elias Stückelberger, Martial Duchamp, Fabien Paul Jacques Dauzou

Understanding the electron scattering mechanisms dominating transport in high and low mobility transparent conducting oxides can provide insight into improving the properties of this crucial photovoltaic device layer. Contributions from ionized impurity sc ...

IEEE2018

Carrier scattering mechanisms limiting mobility in hydrogen-doped indium oxide

Monica Morales Masis, Laura Ding, Michael Elias Stückelberger, Martial Duchamp, Fabien Paul Jacques Dauzou

2018

Mechanical response of CH3NH3PbI3 nanowires

László Forró, Endre Horvath, Luka Ciric, Bálint Náfrádi, Martial Duchamp, Massimo Spina, Márton Kollár

AIP American Institute of Physics2018

Enhancing the optoelectronic properties of amorphous zinc tin oxide by subgap defect passivation: A theoretical and experimental demonstration

Christophe Ballif, Aïcha Hessler-Wyser, Quentin Thomas Jeangros, Jakub Holovsky, Monica Morales Masis, Federica Landucci, Martial Duchamp, Oscar Esteban Rucavado Leandro

The link between sub-bandgap states and optoelectronic properties is investigated for amorphous zinc tin oxide (a-ZTO) thin films deposited by RF sputtering. a-ZTO samples were annealed up to 500 °C in oxidizing, neutral, and reducing atmospheres before ch ...

American Physical Society2017

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

In Situ TEM Analysis of Organic-Inorganic Metal-Halide Perovskite Solar Cells under Electrical Bias

Christophe Ballif, Aïcha Hessler-Wyser, Quentin Thomas Jeangros, Björn Niesen, Jérémie Werner, Martial Duchamp

Changes in the nanostructure of methylammonium lead iodide (MAPbI(3)) perovskite solar cells are assessed as a function of current-voltage stimulus by biasing thin samples in situ in a transmission electron microscope. Various degradation pathways are iden ...

American Chemical Society2016

Compositional study of defects in microcrystalline silicon solar cells using spectral decomposition in the scanning transmission electron microscope

Christophe Ballif, Franz-Josef Haug, Martial Duchamp

The chemical compositions of defective regions in microcrystalline thin film Si solar cells are studied using energy-dispersive X-ray spectroscopy and electron energy-loss spectroscopy (EELS) in the scanning transmission electron microscope. Nanometer-reso ...

American Institute of Physics2013

Combined model of non-conformal layer growth for accurate optical simulation of thin-film silicon solar cells

Franz-Josef Haug, Martial Duchamp

In thin-film silicon solar cells textured interfaces are introduced, leading to improved antireflection and light trapping capabilities of the devices. Thin-layers are deposited on surface-textured substrates or superstrates and the texture is translated t ...

Elsevier Science Bv2013