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Emad Oveisi

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Publications associées (84)

Selective and Stable Electroreduction of CO2 to CO at the Copper/Indium Interface

Emad Oveisi, Andreas Züttel, Raffaella Buonsanti, Robin Tobias Andreas Mutschler, Wen Luo, Gian Luca De Gregorio

2018

Stimuli-responsive Pt(0)-containing metallosupramolecular polymers

Emad Oveisi, Stephen Schrettl

AMER CHEMICAL SOC2018

A large planetary body inferred from diamond inclusions in a ureilite meteorite

Marco Cantoni, Cécile Hébert, Emad Oveisi, Philippe Gillet, Farhang Nabiei, James Badro, Teresa Katharina Dennenwaldt

Planetary formation models show that terrestrial planets are formed by the accretion of tens of Moon-to Mars-sized planetary embryos through energetic giant impacts. However, relics of these large proto-planets are yet to be found. Ureilites are one of the ...

Nature Research2018

Single-layer graphene membranes by crack-free transfer for gas mixture separation

Duncan Thomas Lindsay Alexander, Emad Oveisi, Andreas Züttel, Kumar Varoon Agrawal, Shiqi Huang, Guangwei He, Mostapha Dakhchoune, Wen Luo, Jing Zhao

The single-layer graphene film, when incorporated with molecular-sized pores, is predicted to be the ultimate membrane. However, the major bottlenecks have been the crack-free transfer of large-area graphene on a porous support, and the incorporation of mo ...

Nature Publishing Group2018

Rapid, Selective Heavy Metal Removal from Water by a Metal-Organic Framework/Polydopamine Composite

Emad Oveisi, Seyedmohamad Moosavi, Daniel Teav Sun, Wendy Lee Queen, Davide Tiana, Li Peng

Drinking water contamination with heavy metals, particularly lead, is a persistent problem worldwide with grave public health consequences. Existing purification methods often cannot address this problem quickly and economically. Here we report a cheap, wa ...

2018

Intercalation makes the difference with TiS2: Boosting electrocatalytic water oxidation activity through Co intercalation

Mohammad Khaja Nazeeruddin, Emad Oveisi, Kyung Taek Cho, Aron Joel Huckaba

Intercalated and unmodified TiS2 nanomaterials were synthesized and characterized by UV-Visible-NIR spectroscopy, Powder X-Ray Diffraction, and X-Ray Photoelectron and Ultraviolet Photoelectron Spectroscopy. Photoelectron spectroscopy measurements indicate ...

2018

Trash into Treasure: δ-FAPbI3 Polymorph Stabilized MAPbI3 Perovskite with Power Conversion Efficiency beyond 21%

Mohammad Khaja Nazeeruddin, Emad Oveisi, Peng Gao, Yi Zhang, Zhipeng Li

Effective passivation and stabilization of both the inside and interface of a perovskite layer are crucial for perovskite solar cells (PSCs), in terms of efficiency, reproducibility, and stability. Here, the first formamidinium lead iodide (δ-FAPbI3) polym ...

Wiley2018

Rapid, Selective Extraction of Trace Amounts of Gold from Complex Water Mixtures with a Metal-Organic Framework (MOF)/Polymer Composite

Emad Oveisi, Natalia Gasilova, Daniel Teav Sun, Wendy Lee Queen, Shuliang Yang

With the ever-increasing production of electronics, there is an ensuing need for gold extraction from sources other than virgin mines. Currently, there are no technologies reported to date that can effectively and selectively concentrate ultratrace amounts ...

AMER CHEMICAL SOC2018

Strontium Migration at the GDC-YSZ Interface of Solid Oxide Cells in SOFC and SOEC Modes

Jan Van Herle, Marco Cantoni, Arata Nakajo, Pierre Burdet, Emad Oveisi, Giorgio Rinaldi

Strontium migration from the oxygen electrode to the interface between the electrolyte and interlayer was investigated in solid oxide cells in fuel cell (SOFC) and electrolysis (SOEC) modes. Four samples were imaged by focused ion beam scanning electron mi ...

2017

Enhanced charge collection with passivation of the tin oxide layer in planar perovskite solar cells

Mohammad Khaja Nazeeruddin, Robin Humphry-Baker, Emad Oveisi, Peng Gao, Yonghui Lee, Kyung Taek Cho, Sanghyun Paek, Yi Zhang

Tin oxide is an excellent candidate to replace mesoporous TiO2 electron transport layers (ETLs) in perovskite solar cells. Here, we introduced a SnO2 layer by a low-temperature solution process, and investigated its morphology, opto-physical and electrical ...

Royal Society of Chemistry2017

CsPbBr3 QD/AlOx inorganic nanocomposites with exceptional stability in water, light and heat

Duncan Thomas Lindsay Alexander, Emad Oveisi, Seryio Saris, Raffaella Buonsanti, Anna Loiudice

Herein, the assembly of CsPbBr3 QD/AlOx inorganic nanocomposites, by using atomic layer deposition (ALD) for the growth of the amorphous alumina matrix (AlOx), is described as a novel protection scheme for such QDs. The nucleation and growth of AlOx on the ...

2017

Tilt-less 3-D electron imaging and reconstruction of complex curvilinear structures

Robin Schäublin, Pascal Fua, Quentin Thomas Jeangros, Guillaume Lucas, Cécile Hébert, Duncan Thomas Lindsay Alexander, Emad Oveisi, Antoine Letouzey

The ability to obtain three-dimensional (3-D) information about morphologies of nanostructures elucidates many interesting properties of materials in both physical and biological sciences. Here we demonstrate a novel method in scanning transmission electro ...

Nature Research2017

Post-test Analysis on a Solid Oxide Cell Stack Operated for 10,700 Hours in Steam Electrolysis Mode

Stefan Diethelm, Jan Van Herle, Pierre Burdet, Emad Oveisi, Giorgio Rinaldi

A solid oxide short stack composed of 6 Ni-YSZ supported cells, YSZ electrolyte and GDC-LSC oxygen electrode has been tested for 10,700 hours in steam electrolysis. Initial degradation was followed by a global stabilization of the performance after lowerin ...

2017

On the ADF-STEM dislocation contrast

Cécile Hébert, Emad Oveisi, Maria Chiara Spadaro

2017

Dopant-Free Hole-Transporting Materials for Stable and Efficient Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Christian Ludwig, Paul Gratia, Emad Oveisi, Peng Gao, Peng Qin, Kasparas Rakstys, Yonghui Lee, Kyung Taek Cho, Sanghyun Paek

Molecularly engineered novel dopant-free hole-transporting materials for perovskite solar cells (PSCs) combined with mixed-perovskite (FAPbI(3))(0.85)(MAPbBr(3))(0.15) (MA: CH3NH3+, FA: NH=CHNH3+) that exhibit an excellent power conversion efficiency of 18 ...

Wiley-V C H Verlag Gmbh2017

Computer Vision Techniques Applied to the Reconstruction of the 3-D Structure of Dislocations

Pascal Fua, Cécile Hébert, Emad Oveisi, Sandro Ivo Sebastiano De Zanet

Cambridge University Press2017

Stereo-vision three-dimensional reconstruction of curvilinear structures imaged with a TEM

Pascal Fua, Marco Cantoni, Guillaume Lucas, Cécile Hébert, Emad Oveisi, Antoine Letouzey, Sandro Ivo Sebastiano De Zanet

Deriving accurate three-dimensional (3-D) structural information of materials at the nanometre level is often crucial for understanding their properties. Tomography in transmission electron microscopy (TEM) is a powerful technique that provides such inform ...

Elsevier2017

High-Performance Perovskite Solar Cells with Enhanced Environmental Stability Based on Amphiphile-Modified CH3NH3PbI3

Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Ulf Anders Hagfeldt, Emad Oveisi, Peng Gao, Jingshan Luo, Dongqin Bi

A new aliphatic fluorinated amphiphilic additive is added to CH3NH3PbI3 perovskite to tune the morphology and enhance the environmental stability without sacrificing the performance of the devices. Judicious screening of the perovskite precursor solution r ...

Wiley-V C H Verlag Gmbh2016

PbI2–HMPA Complex Pretreatment for Highly Reproducible and Efficient CH3NH3PbI3 Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Quentin Thomas Jeangros, Emad Oveisi, Peng Gao, Yonghui Lee, Sanghyun Paek, Giulia Grancini, Yi Zhang

Interfacial engineering of the meso-TiO2 surface through a modified sequential deposition procedure involving a novel PbI2–HMPA complex pretreatment is conducted as a reproducible method for preparing MAPbI3 based perovskite solar cells providing the highe ...

2016

Three-Dimensional STEM Imaging of Dislocations

Emad Oveisi

To gain further insight into the fabrication and to improve the mechanical and optoelectronic properties of materials at the nano-scale, new experimental methods that permit thorough but fast and reliable multi-dimension microstructural and defect analyses ...

EPFL2015

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