Publications de Oriol López Sánchez

Highly Oriented Atomically Thin Ambipolar MoSe2

Andras Kis, Philippe Gillet, Dmitry Ovchinnikov, Oleg Yazyev, Ming-Wei Chen, Oriol López Sánchez, Alessandro Surrente, Michele Pizzochero

Transition metal dichalcogenides (TMDCs), together with other two-dimensional (2D) materials, have attracted great interest due to the unique optical and electrical properties of atomically thin layers. In order to fulfill their potential, developing large ...

American Chemical Society2017

Optospintronics in Graphene via Proximity Coupling

Andras Kis, Oriol López Sánchez, Ahmet Avsar, Dmitrii Unuchek

The observation of micrometer size spin relaxation makes graphene a promising material for applications in spintronics requiring long-distance spin communication. However, spin dependent scatterings at the contact/graphene interfaces affect the spin inject ...

American Chemical Society2017

Valley polarization by spin injection in a light-emitting van der Waals heterojunction

Andras Kis, Oriol López Sánchez, Dmitry Ovchinnikov, Adrien Victor Allain, Shikhar Misra

The band structure of transition metal dichalcogenides (TMDCs) with valence band edges at different locations in the momentum space could be harnessed to build devices that operate relying on the valley degree of freedom. To realize such valleytronic devic ...

American Chemical Society (ACS)2016

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

Large-Area Epitaxial Monolayer MoS2

Nicola Marzari, Anna Fontcuberta i Morral, Aleksandra Radenovic, Philippe Gillet, Andras Kis, Dumitru Dumcenco, Marco Gibertini, Yen-Cheng Kung, Oriol López Sánchez, Daria Krasnozhon

Two-dimensional semiconductors such as MoS2 are an emerging material family with wide-ranging potential applications in electronics, optoelectronics, and energy harvesting. Large-area growth methods are needed to open the way to applications. Control over ...

Amer Chemical Soc2015

Large-area MoS2 grown using H2S as the sulphur source

Aleksandra Radenovic, Philippe Gillet, Andras Kis, Duncan Thomas Lindsay Alexander, Dumitru Dumcenco, Dmitry Ovchinnikov, Oriol López Sánchez

We report on the growth of molybdenum disulphide (MoS2) using H2S as a gas-phase sulfur precursor that allows controlling the domain growth direction of domains in both vertical (perpendicular to the substrate plane) and horizontal (within the substrate pl ...

2015

Ultrasensitive photodetectors based on monolayer MoS2

Aleksandra Radenovic, Andras Kis, Metin Kayci, Oriol López Sánchez, Dominik Sebastian Lembke

Two-dimensional materials are an emerging class of new materials with a wide range of electrical properties and potential practical applications. Although graphene(1) is the most well-studied two-dimensional material, single layers of other materials, such ...

Nature Publishing Group2013

Enhancement of Second Harmonic Signal in Nanofabricated Cones

Anna Fontcuberta i Morral, Aleksandra Radenovic, Andrea Lovera, Oriol López Sánchez, Fabrizia Dutto, Martin Heiss

Geometrical effects in optical nanostructures on nanoscale can lead to interesting phenomena such as inhibition of spontaneous emission,(1,2) high-reflecting omnidirectional mirrors, structures that exhibit low-loss-waveguiding,(3) and light confinement.(4 ...

2013