Publication

Free-Carrier-Compensated Charged Domain Walls Produced with Super-Bandgap Illumination in Insulating Ferroelectrics

Publications associées (29)

Colloidal nanocrystals for photoelectrochemical and photocatalytic water splitting

Chethana Janardhana Gadiyar, Raffaella Buonsanti, Anna Loiudice

Colloidal nanocrystals (NCs) are among the most modular and versatile nanomaterial platforms for studying emerging phenomena in different fields thanks to their superb compositional and morphological tunability. A promising, yet challenging, application in ...

2017

Evaluating Charge Carrier Transport and Surface States in CuFeO

Kevin Sivula, Florian Le Formal, Xavier Adrian Jeanbourquin, Wiktor Stefan Bourée, Mathieu Steven Prévot, Nestor Guijarro Carratala

Interest in delafossite (CuFeO2) as a candidate p-type photocathode for photoelectrochemical (PEC) solar fuel production has recently been increasing, mainly due to its excellent stability in aqueous environments and favorable light absorption properties. ...

American Chemical Society2017

Synthesis of Cyanine Polyelectrolytes and Anions for Organic Electronic Devices

Lei Wang

Many practical applications among organic electronic devices have been demonstrated over the last decades. They are considered as promising alternatives to inorganic semiconductor technologies due to the potential of cost-effective fabrication, excellent p ...

EPFL2017

Perovskite Solar Cells on the Way to Their Radiative Efficiency Limit - Insights Into a Success Story of High Open-Circuit Voltage and Low Recombination

Wolfgang Richard Tress

Inorganic-organic lead-halide perovskite solar cells have reached efficiencies above 22% within a few years of research. Achieved photovoltages of >1.2 V are outstanding for a material with a bandgap of 1.6 eV - in particular considering that it is solutio ...

Wiley-V C H Verlag Gmbh2017

Optoelectronic Devices Based on Monolayer Transition Metal Dichalcogenides

Oriol López Sánchez

Monolayer transition metal dichalcogenides (TMD) such as molybdenum disulfide (MoS2), tungsten diselenide (WSe2) and tungsten disulfide (WS2), have shown in the last years remarkable physical properties. These direct badgap three-atoms thick monolayers, wi ...

EPFL2016

Electronic transport properties of vertical and lateral graphene-based heterostructures

Roberto Urcuyo Solorzano

Graphene has some drawbacks, like the absence of an electronic band gap which leads to only small gate switching ratios, and its fast carrier recombination that limits its use in optoelectronics. In order to overcome these issues, the aim of this thesis wa ...

EPFL2016

Tuning the Optoelectronic Properties of ZnO:Al by Addition of Silica for Light Trapping in High-Efficiency Crystalline Si Solar Cells

Christophe Ballif, Aïcha Hessler-Wyser, Ali Dabirian, Stefaan De Wolf, Monica Morales Masis, Björn Niesen

Highly transparent electrodes with a well-tuned refractive index are essential for a wide range of optoelectronic devices, such as light emitting diodes and solar cells. Here, it is shown that the transparency of ZnO:Al can be improved and its refractive i ...

Wiley-Blackwell2016

Photonic contacting of gas-liquid phases in a falling film microreactor for continuous-flow photochemical catalysis with visible light

Albert Renken

A microstructured falling film reactor was applied to the dye-sensitized photochemical conversion of 1,5-dihydroxynaphthalene to juglone. This continuous-flow microreactor enables the efficient contacting of a gas and a liquid phase in combination with ext ...

Royal Soc Chemistry2016

Autodecomposition Approach for the Low-Temperature Mesostructuring of Nanocrystal Semiconductor Electrodes

Kevin Sivula, Xavier Adrian Jeanbourquin, Xiaoyun Yu, Mathieu Steven Prévot, Nestor Guijarro Carratala

Templating nanocrystals into mesoporous electrodes using an organic porogen typically requires thermal oxidation at >400 degrees C to completely remove the organic material and afford good electronic properties. These oxidation conditions are incompatible ...

American Chemical Society2015