Title :

Preparation and study of 2-D semiconductors with Dirac type bands due to the honeycomb nanogeometry

Author(s) :

Kalesaki, Efterpi [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Boneschanscher, Mark Pieter [Auteur]
Geuchies, Jaco J. [Auteur]
Delerue, Christophe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Morais Smith, Cristiane [Auteur]
Institute for Theoretical Physics [Utrecht]
Evers, Wiel H. [Auteur]
Kavli Institute of Nanosciences [Delft] [KI-NANO]
Allan, Guy [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Altantzis, Thomas [Auteur]
Electron Microscopy for Materials Science - EMAT (Antwerp, Belgium)
Bals, Sara [Auteur]
Electron Microscopy for Materials Science - EMAT (Antwerp, Belgium)
Vanmaekelbergh, Daniel [Auteur]

Conference title :

SPIE Photonics West, OPTO 2014, Conference 8981 - Physics, Simulation, and Photonic Engineering of Photovoltaic Devices III

City :

San Francisco, CA

Country :

Etats-Unis d'Amérique

Start date of the conference :

2014

Book title :

_

Publication date :

2014

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

The interest in 2-dimensional systems with a honeycomb lattice and related Dirac-type electronic bands has exceeded the prototype graphene. We show that atomically coherent honeycomb superlattices of rocksalt (PbSe, PbTe) ...
Show more >The interest in 2-dimensional systems with a honeycomb lattice and related Dirac-type electronic bands has exceeded the prototype graphene. We show that atomically coherent honeycomb superlattices of rocksalt (PbSe, PbTe) and zincblende (CdSe, CdTe) semiconductors can be obtained by nanocrystal self-assembly and subsequent cation exchange. These artificial graphene systems combine Dirac-type electronic bands with the beneficial properties of a semiconductor, such as the presence of a band gap and strong spin-orbit coupling; separated conduction 1S and 1P Dirac cones of considerable bandwidth (100 meV) are predicted, as well as dispersionless P-bands. We will also present the first experimental results dealing with the band structure (obtained by cryogenic STM) and the first carrier transport measurements and discuss possible applications of these high-mobility systems in single-photon detection and photovoltaic cells.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Non spécifiée

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL