Concept

Oxyde

Publications associées (309)

Advanced Nanopowder Synthesis

CeO2-based nanomaterials and their rich redox chemistry provide a possible route to pollutant abatement in various heterogeneous processes, and are in particular used as sorbents for flue gases and as oxygen promoters in three-way catalytic converters. The ...

EPFL2017

Characterization at the Atomistic Level of Defective Structures in Complex Materials

Piyush Agrawal

Defects are key to enhance or deploy particular materials properties. In this thesis I present analyses of the impact of defects on the electronic structure of materials using combined experimental and theoretical Electron energy loss spectroscopy (EELS) i ...

EPFL2017

Gold-free Growth of InAs Nanowires

Heidi Andrea Potts

Semiconductor nanowires are interesting building blocks for a variety of electronic and optoelectronic applications, and they provide an excellent platformto probe fundamental physical effects. For the realization of nanowire based devices, a deep understa ...

EPFL2017

Effects of coating spherical iron oxide nanoparticles

Tao Li

We investigate the effect of several coatings applied in biomedical applications to iron oxide nanoparticles on the size, structure and composition of the particles. The four structural techniques employed - TEM, DLS, VSM, SAXS and EXAFS - show no signific ...

Elsevier Science Bv2017

ITO/MoOx/a-Si:H(i) Hole-Selective Contacts for Silicon Heterojunction Solar Cells: Degradation Mechanisms and Cell Integration

Christophe Ballif, Aïcha Hessler-Wyser, Quentin Thomas Jeangros, Davide Sacchetto, Antoine Descoeudres, Gabriel Christmann, Jonas Geissbühler, Matthieu Despeisse, Sylvain Nicolay, Loris Barraud

Molybdenum oxide is an efficient hole collector for silicon solar cells. However, its optoelectronic properties deteriorate during cell manufacturing. To assess this issue, the optoelectronic properties and microstructure of molybdenum oxide-based hole con ...

Ieee-Inst Electrical Electronics Engineers Inc2017

High efficiency large area perovskite solar cells and process for producing the same

Michael Graetzel, Shaik Mohammed Zakeeruddin, Ulf Anders Hagfeldt, Chenyi Yi, Dongqin Bi, Xiong Li

The present invention relates to a method for producing a solid state solar cell, comprising the steps of providing a conductive support layer or current collector, applying a metal oxide layer on the conducting support layer, applying at least one sensiti ...

2017

Crystal Structure of DMF-Intermediate Phases Uncovers the Link Between CH3NH3PbI3 Morphology and Precursor Stoichiometry

Michael Graetzel, Andrey Petrov

We found for the first time a new origin of selection of perovskite crystallization pathways from DMF solutions containing MAI and PbI2 to present here a comprehensive study of a full set of essential intermediate phases determining the perovskite's morpho ...

American Chemical Society2017

Rapid mobilization of noncrystalline U(IV) coupled with FeS oxidation

Rizlan Bernier-Latmani, Malgorzata Alicja Stylo

The reactivity of disordered, noncrystalline U(IV) species remains poorly characterized despite their prevalence in biostimulated sediments. Because of the lack of crystalline structure, noncrystalline U(IV) may be susceptible to oxidative mobilization und ...

Amer Chemical Soc2016

Colloidal Chemistry to Advance Studies in Artificial Photosynthesis

Raffaella Buonsanti

This article presents an overview of our research in the field of colloidal nanocrystal synthesis and their implementation into water splitting and CO2 reduction electrochemical cells. We discuss our approaches to tailormade novel material platforms to adv ...

Swiss Chemical Soc2016

Resistive Switching Element and Use Thereof

Giovanni De Micheli, Davide Sacchetto, Yusuf Leblebici, Pierre-Emmanuel Julien Marc Gaillardon, Shashi Kanth Bobba, Tugba Demirci

A bipolar resistive switching device including an electrically conductive bottom electrode, a stack of transition metal oxides layers, a number of transition metal oxide layers being equal or greater than 2, the stack including: at least one MOx layer, at ...

2016

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