General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DRT-24-0340
Direction
DRT
Thesis topic details
Category
Technological challenges
Thesis topics
Semiconductor perovskites for the future of medical radiography: experimental analysis of doping and link to electrooptical performance
Contract
Thèse
Job description
X-rays is the most widely used medical imaging modality for the detection of pathologies, the monitoring of their evolution and during certain surgical procedures.
The objective of this thesis is to study a new semiconductor material based on perovskites for direct X-ray detection. Their use in the form of photoconductive devices in matrix imagers should make it possible to improve the spatial resolution of images and increase the signal, and thus to treat patients better. Prototype X-ray imagers manufactured at the CEA provide better spatial resolution than current systems, but the detector material still needs to be improved.
To this end, the doctoral student, a physicist and experimenter, will study the link between the structural properties of CsPbBr3 layers and the transport properties of charge carriers in these layers. He will then analyse the effect of intrinsic and extrinsic doping of the layers on the dark current, photocurrent and electrical stability of the devices. The results of this thesis will provide a detailed understanding of the mechanisms responsible for the performance of CsPbBr3-based X-ray imagers.
University / doctoral school
Ecole Doctorale des Sciences Physiques et de l’Ingénieur
Bordeaux
Thesis topic location
Site
Grenoble
Requester
Position start date
01/09/2024
Person to be contacted by the applicant
GROS d'AILLON Eric eric.grosdaillon@cea.fr
CEA
DRT/DOPT//LASP
Commissariat à l’énergie atomique et aux énergies alternatives
MINATEC Campus
17 rue des Martyrs
38054 Grenoble Cedex 9
(33)438782087
Tutor / Responsible thesis director
HIRSCH Lionel lionel.hirsch@ims-bordeaux.fr
Université de Bordeaux
IMS CNRS UMR 5218
Laboratoire IMS CNRS UMR 5218
ESMAC, 16 Avenue Pey Berland
33607 Pessac CEDEX
+33 (0)5 56 84 61 46
En savoir plus
https://www.youtube.com/watch?v=v23a1EMoEKg https://peroxis-project.eu/blog/2021/06/15/835/