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PhD Defense of Pierre GUINEDOR

Published on October 29, 2019
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PhD Defense November 8, 2019 | Access map
Defense of the doctoral thesis of  Pierre GUINEDOR (in closed session), for the University Grenoble Alpes , speciality  " NANO ELECTRONICS & NANO TECHNOLOGIES ", entitled:
Z306 Phelma / Minatec
3 Parvis Louis Néel 
38000 Grenoble.

Study of low frequency noises and of electrically active defects in cooled infrared detectors



Friday, November 8th, 2019 at 2pm

The current trend in the infrared market is to address HOT (High Operating Temperature) applications, which exacerbates the impact of low frequency noises (Random Telegraph Signal (RTS) and 1/f) and then degrades the image quality of cooled HgCdTe detectors. In this work, the focus was laid on the analysis of defects at the root of these noises to, eventually, improve the image quality.
Two paths are introduced: the electro-optical characterization of low frequency noises and the spectroscopic characterization of electrically active defects in the material. First generalities on infrared detection and spectroscopic techniques used in this work are described. Then low frequency noises characterizations are realized to refine the comprehension of their physical mechanisms. Finally DLTS (Deep Level Transient Spectroscopy) studies are performed on two technologies for SWIR (Short Wave InfraRed, λc = 2.5 μm) and MWIR blue ((Mid Wave Infrared, λc = 4.2 μm) bands in order to get to the root of low frequency noises.
Infrared, Low frequency noises, RTS, 1/f, DLTS

Jury members:
  • M. DANIEL BAUZA , Researcher, CNRS Délégation Alpes France: Supervisor
  • M. LAURENT RUBALDO, Engineer, LYNRED - Veurey Voroize, France: Co-supervisor
  • M. GUO-NENG LU, Professor, University Lyon 1, France: Reviewer
  • M. JEAN-GUY TARTARIN, Professor, University Toulouse-III - PaulL-Sabatier, France: Reviewer
  • Mme ANNE KAMINSKI-CACHOPO, Professor, Grenoble INP, France: Examiner
  • M. REMI BARBIER, Assistant professor, ISAE - Supaero - Toulouse, France: Examiner
  • M. GEORGES BREMOND, Professor, INSA Lyon, France:  Examiner
  • M. SKANDAR BASROUR, Professor, Université Grenoble Alpes, France: Examiner
  • M. GILLES REIMBOLD, Research Engineer, CEA Grenoble: Invited

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Thesis prepared in the laboratories  LYNRED , IMEP-LAHC and CEA/Leti supervised by  Daniel BAUZA , supervisor and  Laurent RUBALDO, Co-supervisor .

Date of update October 30, 2019

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