Publications by Dmitrii Unuchek

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

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

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

Spin-valley optoelectronics based on two-dimensional materials

Dmitrii Unuchek

Two-dimensional (2D) materials, in particular graphene and transition metal dichalcogenides (TMDC), have attracted great scientific interest over the last decade, revealing exceptional mechanical, electrical and optical properties. Owing to their layered n ...

EPFL2019

Light-Enhanced Blue Energy Generation Using MoS2 Nanopores

Andras Kis, Aleksandra Radenovic, Michael Graf, Martina Lihter, Dmitrii Unuchek, Aditya Sarathy

Blue energy relies on the chemical potential difference between solutions of high and low ionic concentrations, potentially providing an independent energy source at estuaries around the world. The energy conversion relies on reverse electrodialysis via io ...

2019

Excitonic device and operating methods thereof

Andras Kis, Dmitrii Unuchek, Ahmet Avsar, Alberto Ciarrocchi

The present disclosure concerns an excitonic device including at least one heterostructure comprising or consisting solely of a first two-dimensional material or layer and a second two-dimensional material or layer. The at least one heterostructure being c ...

2019

MoS2 photodetectors integrated with photonic circuits

Andras Kis, Dmitrii Unuchek, Juan Francisco Gonzalez Marin

2019

Valley-polarized exciton currents in a van der Waals heterostructure

Andras Kis, Dmitrii Unuchek, Ahmet Avsar, Alberto Ciarrocchi, Zhe Sun

2019

Defect induced, layer-modulated magnetism in ultrathin metallic PtSe2

Andras Kis, Oleg Yazyev, Dmitrii Unuchek, Michele Pizzochero, Ahmet Avsar, Alberto Ciarrocchi

2019

Polarization switching and electrical control of interlayer excitons in two-dimensional van der Waals heterostructures

Andras Kis, Dmitrii Unuchek, Ahmet Avsar, Alberto Ciarrocchi

Nature Publishing Group2018

Room-temperature electrical control of exciton flux in a van der Waals heterostructure

Andras Kis, Dmitrii Unuchek, Ahmet Avsar, Alberto Ciarrocchi

2018

Optospintronics in Graphene via Proximity Coupling

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

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

Suppressing Nucleation in Metal–Organic Chemical Vapor Deposition of MoS2

Andras Kis, Davide Deiana, Dmitry Ovchinnikov, Dmitrii Unuchek, Hokwon Kim

Toward the large-area deposition of MoS2 layers, we employ metal–organic precursors of Mo and S for a facile and reproducible van der Waals epitaxy on c-plane sapphire. Exposing c-sapphire substrates to alkali metal halide salts such as KI or NaCl together ...

American Chemical Society (ACS)2017