Elsa Cassette reports on a new study performed in her previous lab (LIDYL). It deals with the physics of excitons dynamics in 2D perovskites nanoplatlets. It is published in The journal of Physical Chemistry Letters
Recently our team presented two of its activities in short videos (in French).
If you want to know more about nano-light source made from perovskites crystals, please follow Cédric
Damien, will tell you everything on how a single optically levitated particle, help us to understand nano-thermodynamics.
Emmanuelle Deleporte is co-author of the review entitled “Perovskite semiconductors for room-temperature exciton-polaritonics” publshed in Nature Materials.
The group of M. Chamarro (INSP) together with people from NOOS team published a paper entitled “Energy Tuning of Electronic Spin Coherent Evolution in Methylammonium Lead Iodide Perovskites” in The Journal of Chemistry Letters.
New paper (in French) by Emmanuelle Deleporte in the “Bulletin de l’Union des professeurs de physique chimie”
Cédric Mayer and his co-workers published this paper for the 25th anniversary of the Journal ‘Molecules’. The paper in open access can be download here
The group report on “Tetrazine molecules as efficient electronic diversion channel in 2D organic-inorganic perovskites”. This work has been done in collaboration with FOTON, PPSM, and ILV labs. You can find the paper here
Abstract: We present the synthesis of two novel two-dimensional (2D) hybrid organic-inorganic halide perovskites incorporating for the first time 100% of a photoactive tetrazine derivative as the organic component. With this dye acting as spacer, the perovskite excitonic light emission is strongly suppressed, a fact that comes with surprise, considering the outstanding emission properties both of lead-halide perovskite frames. Photophysical studies along with hybrid DFT simulations demonstrate partial energy transfer from the inorganic frame to the organic dye and allow to discuss several diversion channels for the relaxation of carriers generated in the perovskite. Our work proves the feasibility of inserting photoactive small rings in a 2D perovskite structure, meanwhile providing robust frame to rationalize the electronic interactions between the semiconducting inorganic layer and organic chromophores, with the prospects of optimizing the organic moiety according to the envisaged application.
We welcome a new post-doc in the group! Christine begins a work on the optical properties of nanographenes!
We welcome a new post-doc in the group! Maxim begins a work on the synthesis of new perovskites nanocrystals!
New paper from the group. The particular light-matter interaction in optical cavities called ‘strong coupling regime’ leads to the existence of new quasi particles called cavity exciton-polaritons. These quasi particles, made both of light and matter excitations, are used to redirect the random lasing emission of a thin layer of hybrid perovskites.
You can read the paper here: optics express 28, 39739 (2020)
