Informations générales
Intitulé de l'offre : M/F PhD student working on the development of a new generation of self-emitting, energy-efficient and low-cost QLED (quantum dot light-emitting diode) devices based on non-toxic nanocrystals. (H/F)
Référence : UMR5026-FREBON0-256
Nombre de Postes : 1
Lieu de travail : PESSAC
Date de publication : vendredi 29 août 2025
Type de contrat : CDD Doctorant
Durée du contrat : 36 mois
Date de début de la thèse : 1 novembre 2025
Quotité de travail : Complet
Rémunération : 2200 gross monthly
Section(s) CN : 15 - Chimie des matériaux, nanomatériaux et procédés
Description du sujet de thèse
This project aims to develop submicron light-emitting sources based on thin film deposition of non-toxic
InxGa1-xN (0≤x≤1) nanocrystals with unique photoluminescence properties (quantum confinement),
covering a wide range of colors by varying size and composition. The project intends to propose a
breakthrough bottom-up approach compared to the classical top-down semiconductor way, time and cost consuming. Biocompatible nanocrystals of GaN and In0.25Ga0.75N have been successfully
synthesized using a supercritical millifluidics route and deposited as a thin layer (spin-coating) for the first
time. The synthesis was optimized to obtain non aggregated Quantum Dots with intense fluorescence in UV
(GaN: lem=330nm@lexc=230nm) and visible domains (In0.25Ga0.75N: lem=540nm@lexc=320nm) with a high
production yield. Today the first QLEDs based on In0.25Ga0.75N have been produced, validating their use as
emitting layer and ensuring the feasibility of the project. Even if the synthesis of nanocrystals and the
structure deposition are still not optimized, the devices produce light which constitutes, to our knowledge, a
top rank position. The next step consists in the synthesis of core@shell heterostructures to limit luminescence defects that can mask the excitonic luminescence.
Contexte de travail
Created in 1995, the Bordeaux Institute of Condensed Matter Chemistry (ICMCB) focuses its research on Solid State Chemistry, Materials Science and Chemistry and Process: designing, preparing, shaping and characterizing materials in order to discover, control and optimize specific functions. The ICMCB carries out fundamental research on model materials and/or materials with potential applications.
The ICMCB is a UMR with an average of 280 agents (permanent and non-permanent), with 3 tutelles, hosted by the CNRS and in total ZRR. The position is located in a sector covered by the Protection of Scientific and Technical Potential (PSTP), and therefore requires, in accordance with the regulations, that the arrival of the agent be authorized by the competent authority of MESR.
Le poste se situe dans un secteur relevant de la protection du potentiel scientifique et technique (PPST), et nécessite donc, conformément à la réglementation, que votre arrivée soit autorisée par l'autorité compétente du MESR.
Contraintes et risques
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