Dimensionality engineering of heteronanostructures


Université de Lille

Personnes à contacter par le candidat

Dr. Louis Biadala (louis.biadala@iemn.fr) -
Dr. Gang Ji (gang.ji@univ-lille.fr)






The METEOR project between IEMN and UMET labs from ULNE in co-tutelle with Ghent University (Belgium) and with the support of TU-Dormund (Germany) and the start-up company QustomDot (Belgium) aims at unveiling the electronic and optical properties of planar heteronanostructures (HNS) having various dimensionalities in order to transcend the properties of the standalone materials. The interdisciplinary approach of the project will enable correlating the colloidal growth of HNS to their structural, optical and electronic properties. This will lead to new breakthroughs in fundamental science and into the rationalization of device involving nanostructures.
The goal of the METEOR project is to exploit the quantum confinement at the nanoscale to selectively restrict the degree of free motion of the charge carriers, i.e. the dimensionality, in each material composing the planar heteronanostructures. This interdisciplinary project (chemistry, physics) will require international mobilities. The growth of these HNS will be done by colloidal chemistry and will be carried out at UGent and in collaboration with QustomDot (Belgium). Their advanced structural properties (EELS, EDX, composition analysis) will be investigated down to the atomic scale at UMET lab by using a state-of-the-art FEI Titan Themis 300 Transmission Electron Microscope. Their electronic properties will be unveiled in correlation with their geometry, down to the individual HNS, at IEMN by performing electronic density tomography with a low temperature scanning tunneling microscope. These studies will be enriched with academic and non academic secondments at TU-Dortmund (Germany), to perform spin-resolved optical experiments in magnetic fields, and at QustomDot to develop applications/devices. Upon success to project calls, characterizations in magnetic fields up to 37 T at the High Magnetic Field Lab (HFML) (Nijmegen, The Nederland) are envisaged.
The candidate will have the opportunity to attend summer school organized by CNRS such as Les Houches or Cargèse, or in the framework of the Gordon Research Conference (GRC). The candidate will be able to attend prestigious conferences such as Nanoge, NanaX, GRC, Quantum dot conference, PCNSPA, JMC,…
Labs involved: IEMN CNRS UMR 8520 (Louis Biadala, Hub 3), UMET CNRS UMR 8207 (Gang Ji, Hub 2). The project is done in the framework of a co-tutelle with UGent.
Secondments: academic at TU-Dortmund (Germany)/ non academic QustomDot company (Belgium)