Publications de Zhe Sun | EPFL Graph Search

Electrically tunable giant Nernst effect in two-dimensional van der Waals heterostructures

Andras Kis, Guilherme Migliato Marega, Zhe Sun, Gabriele Pasquale

The Nernst effect, a transverse thermoelectric phenomenon, has attracted significant attention for its potential in energy conversion, thermoelectrics and spintronics. However, achieving high performance and versatility at low temperatures remains elusive. ...

2024

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

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

Nature Publishing Group2023

Disorder-induced bulk photovoltaic effect in a centrosymmetric van der Waals material

Andras Kis, Juan Francisco Gonzalez Marin, Cheol Yeon Cheon, Mukesh Kumar Tripathi, Zhe Sun

Sunlight is widely seen as one of the most abundant forms of renewable energy, with photovoltaic cells based on pn junctions being the most commonly used platform attempting to harness it. Unlike in conventional photovoltaic cells, the bulk photovoltaic ef ...

2023

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

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

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

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

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

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

Nature Publishing Group2022

Indeno[1,2-b]carbazole as Methoxy-Free Donor Group: Constructing Efficient and Stable Hole-Transporting Materials for Perovskite Solar Cells

Ulf Anders Hagfeldt, Zhe Sun, Yinghui Wu, Zhiye Wang, Jialin Wang, Han Zhang

With perovskite-based solar cells (PSCs) now reaching efficiencies of greater than 20 %, the stability of PSC devices has become a critical challenge for commercialization. However, most efficient hole-transporting materials (HTMs) thus far still rely on t ...

Wiley-VCH Verlag GmbH2019

Valley-polarized exciton currents in a van der Waals heterostructure

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

2019

Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems

Andras Kis, Zhe Sun

We present the science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems, targeting an evolution in technology, that might lead to impacts and benefits reaching into most areas of society. This roadmap was developed ...

Royal Society of Chemistry2015