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Gate dependent photocurrents at a graphene p-n junction

Related publications (41)

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Graphene for Nanoelectronic Applications

Pankaj Sharma

During the past decade, graphene --- a monolayer of carbon atoms --- has attracted enormous interest for its use in nanoelectronic device applications. The absence of bandgap, however, has stalled its use both in logic (inability to turn off) and radio fre ...

EPFL2015

Monitoring Charge Carrier Dynamics at Atomic Length Scales by STM-induced Luminescence

Christoph Grosse

The goal of this thesis is the combination of the high spatial resolution of scanning tunneling microscopy (STM) with the high temporal resolution of optical spectroscopy, by monitoring the light emitted from the tunnel junction. Two complementary techniqu ...

EPFL2015

Charge-transport properties of monolayer MoS2 at the interface with dielectric materials

Simone Bertolazzi

Two-dimensional (2D) semiconductors, consisting of single-sheets of layered transition metal dichalcogenides (TMD), are attracting enormous interest from both fundamental science and technology. Monolayer molybdenum disulfide (MoS2), a typical example from ...

EPFL2015

Graphene Field Effect Devices Operating in Differential Circuit Configuration

Davide Sacchetto, Yusuf Leblebici, Clemens Benedict Nyffeler

We study the concept of a basic building block for circuits using differential signaling and being based on graphene field effect devices. We fabricated a number of top-gated graphene FETs using commercially available graphene and employing electron beam l ...

Elsevier2015

Functionalized graphene grown by oxidative dehydrogenation chemistry

László Forró, Arnaud Magrez, Endre Horvath, Arnaud Walter, Daniel Oberli, Massimo Spina, Jacim Jacimovic, Laurent Syavoch Bernard

We report on a highly efficient growth of graphene using dehydrogenation of acetylene by an oxidative reaction with carbon dioxide. In few seconds, large-area of copper foil used as catalyst of the reaction is fully covered with graphene. The yield of the ...

Pergamon-Elsevier Science Ltd2014

Light Generation and Harvesting in a van der Waals Heterostructure

Aleksandra Radenovic, Andras Kis, Esther Alarcon Llado, Oriol López Sánchez, Volodymyr Koman

Two-dimensional (2D) materials are a new type of materials under intense study because of their interesting physical properties and wide range of potential applications from nanoelectronics to sensing and photonics. Monolayers of semiconducting transition ...

Amer Chemical Soc2014

Graphene Field Effect Devices Operating in Differential Configuration

Davide Sacchetto, Yusuf Leblebici, Clemens Benedict Nyffeler

After decades of miniaturization and performance tuning, Silicon electronics is approaching its technological limits. In the search for alternative transistor channel materials, Graphene has been given much attention since its discovery in 2004, mainly bec ...

2014

Pseudospin, an additional degree of freedom emerging in graphene as a direct consequence of its honeycomb atomic structure, is responsible for many of the exceptional electronic properties found in this material. This paper is devoted to providing a clear ...

Amer Physical Soc2012

We develop a model for carrier generation by impact ionization in graphene, which shows that this effect is non-negligible because of the vanishing energy gap, even for carrier transport in moderate electric fields. Our theory is applied to graphene field ...

American Institute of Physics2012

Coulomb blockade in a granular material made of gold nanowires

Hoël Maxime Guérin

Uniform, 2 nm diameter gold nanowires were synthesized through the reduction of gold(III) chloride in an oleylamine matrix. They were top-contacted on a Si/SiO2 substrate with metallic electrodes to manufacture back-gated transistors. Due to thermal breaka ...

2012