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-24-0820
Direction
DRT
Thesis topic details
Category
Technological challenges
Thesis topics
The impact of intrinsic and of extrinsic defects on the dynamic Ron and off-state leakage current of lateral GaN power devices
Contract
Thèse
Job description
The intentional doping of lateral GaN power high electron mobility transistors (HEMTs) with carbon (C) impurities is a common technique to reduce buffer conductivity and increase breakdown voltage. However, this comes at the cost of increased intrinsic defects together with degraded dynamic on-resistance (Ron) and current-collapse effects.
The aim of this project is compare the performance of HEMTs devices containing different quantities of extrinsic defects (such as C atoms) and intrinsic defects (such as dislocations), as a function of growths conditions to guide toward optimized buffer structure with good dynamic Ron and low vertical leakage simultaneously.
University / doctoral school
Ecole Doctorale de Physique de Grenoble (EdPHYS)
Université Grenoble Alpes
Thesis topic location
Site
Grenoble
Requester
Position start date
01/10/2024
Person to be contacted by the applicant
TORRENGO Simona 
simona.torrengo@cea.fr
CEA
DRT/LETI/DPFT/SMTP/LMP
17 rue des Martyrs
38054 Grenoble Cedex 9
+33438789853
Tutor / Responsible thesis director
CHARLES Matthew matthew.charles@cea.fr
CEA
DRT/LETI/DPFT/SMTP/LMP
Commissariat à l’énergie atomique et aux énergies alternatives
MINATEC Campus
17 rue des martyrs
F-38054 Grenoble Cedex
FRANCE
(+33) 04 38 78 93 19
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