Publications de Jérémie Minh-Châu Brillet

Solar Energy Stored as Hydrogen : Controlling Inexpensive Oxide-based Nanostructures for Efficient Water Splitting

The tandem photoelectochemical (PEC) cell based on oxide semiconductors for water splitting offers a potentially inexpensive route for solar hydrogen generation. At the heart of the device, a nanostructured photoanode for water oxidation is connected in se ...

EPFL2012

A Ga2O3 underlayer as an isomorphic template for ultrathin hematite films toward efficient photoelectrochemical water splitting

Michael Graetzel, Maurin Cornuz, Kevin Sivula, Florian Le Formal, Jérémie Minh-Châu Brillet, Nicolas Tétreault, Takashi Hisatomi

Hematite photoanodes for photoelectrochemical (PEC) water splitting are often fabricated as extremely-thin films to minimize charge recombination because of the short diffusion lengths of photoexcited carriers. However, poor crystallinity caused by structu ...

2012

Highly efficient water splitting by a dual-absorber tandem cell

Michael Graetzel, Maurin Cornuz, Jun Ho Yum, Kevin Sivula, Jérémie Minh-Châu Brillet, Takashi Hisatomi

Photoelectrochemical water-splitting devices, which use solar energy to convert water into hydrogen and oxygen, have been investigated for decades. Multijunction designs are most efficient, as they can absorb enough solar energy and provide sufficient free ...

Nature Publishing Group2012

Solar hydrogen production with semiconductor metal oxides: new directions in experiment and theory

Michael Graetzel, Kevin Sivula, Florian Le Formal, Jérémie Minh-Châu Brillet

An overview of a collaborative experimental and theoretical effort toward efficient hydrogen production via photoelectrochemical splitting of water into di-hydrogen and di-oxygen is presented here. We present state-of-the-art experimental studies using hem ...

2012

Improved electrode

Michael Graetzel, Jérémie Minh-Châu Brillet, Nicolas Tétreault

The present invention provides a generic electrode for photovoltaics, water splitting cells or any electro-chemical device where a three-dimensional transparent conductive backbone provides efficient charge extraction and can support an active guest materi ...

2011

High-Efficiency Dye-Sensitized Solar Cell with Three-Dimensional Photoanode

Michael Graetzel, Shaik Mohammed Zakeeruddin, Jérémie Minh-Châu Brillet, Nicolas Tétreault, Thomas Moehl, Leo-Philipp Heiniger

Herein, we present a straightforward bottom-up synthesis of a high electron mobility and highly light scattering macroporous photoanode for dye-sensitized solar cells. The dense three-dimensional Al/ZnO, SnO2, or TiO2 host integrates a conformal passivatio ...

American Chemical Society2011

Cathodic shift in onset potential of solar oxygen evolution on hematite by 13-group oxide overlayers

Michael Graetzel, Maurin Cornuz, Kevin Sivula, Florian Le Formal, Jérémie Minh-Châu Brillet, Nicolas Tétreault, Takashi Hisatomi

The onset potential of photoelectrochemical water oxidation on ultrathin hematite was improved by up to 200 mV by the chemical bath deposition of 13-group oxides as overlayers. It is proposed that the corundum-type overlayers released lattice strain of the ...

2011

High-Efficiency Solid-State Dye-Sensitized Solar Cells: Fast Charge Extraction through Self-Assembled 3D Fibrous Network of Crystalline TiO2 Nanowires

László Forró, Michael Graetzel, Shaik Mohammed Zakeeruddin, Arnaud Magrez, Laurent Gabriel Félix Alexandre Stéphane Bungener, Jérémie Minh-Châu Brillet, Nicolas Tétreault, Rita Smajda, Endre Horvath, Thomas Moehl, Peng Wang

Herein, we present a novel morphology for solid-state dye-sensitized solar cells based on the simple and straightforward self-assembly of nanorods into a 3D fibrous network of fused single-crystalline anatase nanowires. This architecture offers a high roug ...

American Chemical Society2010

Decoupling Feature Size and Functionality in Solution-Processed, Porous Hematite Electrodes for Solar Water Splitting

Michael Graetzel, Kevin Sivula, Jérémie Minh-Châu Brillet

We introduce a simple solution-based strategy to decouple morphological and functional effects of annealing nanostructured, porous electrodes by encapsulation with a SiO2 confinement scaffold before high temperature treatment We demonstrate the effectivene ...

American Chemical Society2010

Examining architectures of photoanode-photovoltaic tandem cells for solar water splitting

Michael Graetzel, Maurin Cornuz, Jun Ho Yum, Kevin Sivula, Florian Le Formal, Jérémie Minh-Châu Brillet

Given the limitations of the materials available for photoelectrochemical water splitting, a multiphoton (tandem) approach is required to convert solar energy into hydrogen efficiently and durably. Here we investigate a promising system consisting of a hem ...

Cambridge University Press2010

Solid-state dye-sensitized solar cells using TiO2 nanotube arrays on FTO glass

Michael Graetzel, Shaik Mohammed Zakeeruddin, Peter Chen, Jérémie Minh-Châu Brillet

Highly ordered, vertically oriented TiO2 nanotube arrays were prepared by potentiostatic anodization of titanium on FTO-coated glass substrate and for the first time successfully applied in the fabrication of solid-state dye sensitized solar cells (SSDSCs) ...

Royal Society of Chemistry2009

Pore-Filling of Spiro-OMeTAD in Solid-State Dye Sensitized Solar Cells: Quantification, Mechanism, and Consequences for Device Performance

Michael Graetzel, Jérémie Minh-Châu Brillet, Nicolas Tétreault

In this paper, the pore filling of spiro-OMeTAD (2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenylamine)9,9'-spirobifluorene) in mesoporous TiO2 film is quantified for the first time using XPS depth profiling and UV-Vis absorption spectroscopy. It is shown that s ...

2009

Application of Highly Ordered TiO2 Nanotube Arrays in Flexible Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Peter Chen, Jérémie Minh-Châu Brillet

2008