Publications de Fedele Tagarelli

Enhancing interlayer exciton dynamics by coupling with monolithic cavities via the field-induced Stark effect

Andras Kis, Fedele Tagarelli, Edoardo Lopriore

Optical microcavities provide a powerful and versatile framework for manipulating the dynamics of photonic emission from optically active materials through light recirculation. Spatially indirect interlayer excitons (IXs) exhibit broad tunability of their ...

2025

Interlayer Exciton Dynamics in Van Der Waals Heterostructures

Fedele Tagarelli

Two-dimensional (2D) crystals, such as graphene or transition metal dichalcogenides (TMDCs) are a fascinating class of quantummaterials. These compounds are obtained isolating the single atomic sheets that normally form bulk layered crystals, and the reduc ...

EPFL2024

Electrical control of hybrid exciton transport in a van der Waals heterostructure

Andras Kis, Fedele Tagarelli, Edoardo Lopriore, Zhe Sun, Gabriele Pasquale

Nature Publishing Group2023

Electrical detection of the flat-band dispersion in van der Waals field-effect structures

Andras Kis, Oleg Yazyev, Fedele Tagarelli, Edoardo Lopriore, Kristians Cernevics, Zhe Sun, Gabriele Pasquale

Two-dimensional flat-band systems have recently attracted considerable interest due to the rich physics unveiled by emergent phenomena and correlated electronic states at van Hove singularities. However, the difficulties in electrically detecting the flat- ...

2023

Electrically tunable dipolar interactions between layer-hybridized excitons

Andras Kis, Fedele Tagarelli, Edoardo Lopriore

Transition-metal dichalcogenide bilayers exhibit a rich exciton landscape including layer-hybridized excitons, i.e. excitons which are of partly intra- and interlayer nature. In this work, we study hybrid exciton-exciton interactions in naturally stacked W ...

ROYAL SOC CHEMISTRY2023

Room-temperature electrical control of polarization and emission angle in a cavity-integrated 2D pulsed LED

Andras Kis, Fedele Tagarelli, Dmitrii Unuchek, Zhe Sun, Juan Francisco Gonzalez Marin, Cheol Yeon Cheon

Devices based on two-dimensional (2D) semiconductors hold promise for the realization of compact and versatile on-chip interconnects between electrical and optical signals. Although light emitting diodes (LEDs) are fundamental building blocks for integrate ...

Nature Research2022

Excitonic devices with van der Waals heterostructures: valleytronics meets twistronics

Andras Kis, Fedele Tagarelli, Ahmet Avsar, Alberto Ciarrocchi

2D semiconducting transition metal dichalcogenides comprise an emerging class of materials with distinct properties, including large exciton binding energies that reach hundreds of millielectronvolts and valley-contrasting physics. Thanks to the van der Wa ...

2022

Excitonic transport driven by repulsive dipolar interaction in a van der Waals heterostructure

Andras Kis, Fedele Tagarelli, Alberto Ciarrocchi, Zhe Sun, Juan Francisco Gonzalez Marin

Nature Publishing Group2022