CE09 - Nanomatériaux et nanotechnologies pour les produits du futur

TRansport and Optical Properties of Individual ColloidAL quantum wells – TROPICAL

Submission summary

Since their discovery in 2013, colloidal quantum well, often referred to as nanoplatelets, kept on fascinating scientists because of their superior structural and optical properties. During their chemical growth, their thickness is controlled at the atomic layer scale which leads to unprecedented optical properties at room temperature such as an emission linewidth in ensemble limited by the thermal broadening. While remarkable, these nanostructures have only been studied by optical methods at the ensemble level. Nevertheless, numbers of experimental results have led to controversial or speculative interpretations and the full potential of nanoplatelets have not been disclosed yet. These problems find their source in the void left by the lack of knowledge on their electronic and optical properties at the individual scale. This dramatically hampers the comprehensive knowledge of the physical mechanisms at stakes in the optical and electronic properties of nanoplatelets
The TROPICAL project aims at addressing the physical mechanisms involved at the surface and the interface of nanoplatelet-based nano- and hetero-nanostructures at the individual scale. For the first time, the electronic properties of individual nanoplatelets will be unveiled. This cornerstone in the studies of nanoplatelet which will allow unveiling the dimensionality, the electronic interactions might lead to change in the paradigm for nanoplatelets. In addition, this project will set a hallmark for several fundamental parameters that are not yet available such as the DOS, the exciton binding energy, the Landé g-factor, the band offset in HNS, the ultimate emission linewidth, or blinking mechanism, but mandatory to perform theoretical modelling, to predict the fate of charge carriers in heterostructures and to rationalize the design of devices.

Project coordination

Louis Biadala (Institut d'électronique, de microélectronique et de nanotechnologie)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

IEMN Institut d'électronique, de microélectronique et de nanotechnologie

Help of the ANR 246,425 euros
Beginning and duration of the scientific project: December 2019 - 48 Months

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