M. Mathieu Frégnaux 

Research topics: surface and material science

Topic I: Photoemission and related techniques

• ILV scientific and technical manager in photoemission
• XPS, UPS characterizations (regular and angle resolved analyses, mapping, depth profiling)
• Operando XPS (device polarization, optical stimuli)
• REELS, LEIS, in situ annealing
• Synchrotron based photoemission: NAP-XPS and time resolved PES (TEMPO/SOLEIL), PEEM (HERMES/SOLEIL), HAXPES (KMC-1/BESSY), XAS (APE/ELETTRA)

Topic II: Optical characterizations

• Laser safety manager
• ILV-EPI scientific and technical manager of optical characterization tools
• Photoluminescence and Raman spectrometry on thin films and solutions
• Spectroscopic ellipsometry

Field of expertise

• Semiconductors (II-VI, III-V, IV)
• Oxides (perovskite oxides)
• 2D materials

R&D projects with industrial partners

• III-V Lab, Thales Research & Technology, 3SP Technologies, Lynred, Linxens
• TotalEnergies, Hutchinson
• Saint Gobain Recherche
• IPVF
• Valeo

Current Position

• Since 2015. Research Engineer at CNRS (French National Centre for Scientific Research
  Co-manager of CEFS2 facilities, responsible of optical benches (PL, Raman, ellipsometry)
  Equipe EPI, Institut Lavoisier de Versailles, France

Education

• 2012 PhD in Condensed Matter Physics obtained at University of Lorraine, Metz (France)
  Thesis: Elaboration and characterization of cadmium sulfide (CdS) nanocrystals – nanostructured thin film deposition
  Supervision: Jean-Pierre Laurenti / Jean-Jacques Gaumet

Previous positions

• 2014-2015: Research Scientist (Postdoctoral Fellow)
  French Alternative Energies and Atomic Energy Commission (CEA) - LETI / PFNC - Grenoble (France)
       Advanced characterization protocol development for bidimensional (2D) transition metal dichalgogenide monolayers (MoS2) - integration in microelectronic devices (transistors)
• 2013-2014: Research associate – lecturer (ATER)
  Université de Strasbourg (France)
       Teaching Physics at Télécom Physique Strasbourg
       Study of doped silicon (Si), germanium (Ge) and ternary InxGa1-xAs nanocrystals grown by ion beam synthesis: potential active layers for solar cells or memories
• 2013: Postdoctoral Fellow
  CNRS / Ecole Nationale Supérieure des Industries Chimiques (ENSIC) - Nancy (France)
       ANR «NanoZnOTox»: Bioperception, toxicity and stability of zinc oxide (ZO) nanocrystals.