Offres d’emploi

Plasma deposition of III-V thin film materials

Contract type: Fixed term

Starting date: October 2020

Duration: 36 months

Working Place: Palaiseau

Education: Master 2; Engineer

Salary: 28,800 € (annual gross)

IPVF in brief

Become an actor of the Energy Transition by joining a team driven by innovation and impact to address today’s most decisive challenges.

IPVF – Institut Photovoltaïque d’Île-de-France, is a global Research, Innovation and Education center, which mission is to accelerate energy transition through science & technology.

Gathering industrial PV leaders (EDF, Total, Air Liquide, Horiba and Riber) and world-renowned academic research teams (CNRS, Ecole Polytechnique), multi-disciplinary and international IPVF teams conduct research for clean energy technologies.

IPVF at a glance:

  • An ambitious Scientific and Technological Program: from tandem solar cell technologies to economy & market assessment, state-of-the art characterization, photocatalysis and concepts breakthrough.
  • A state-of-the-art technological platform: more than 100 tools, located in cleanrooms (advanced characterization, materials deposition, prototypes for fabrication, modelling…).
  • A high-standard Education program (M.S. and PhD students).

 

Job context

The project is part of a French collaboration between IPVF and LPICM (CNRS, École Polytechnique), in the area of plasma and materials science for photovoltaic and microelectronic applications. An opportunity has arisen to take part in an exciting multi-disciplinary project to develop original approaches for the low-cost deposition of III-V thin films (mainly Gallium based materials) using a low-temperature plasma process. In comparison with usual semiconductor deposition processes such as MBE or MOCVD, plasma has the advantage of working at low temperature, and of being an environmentally-friendly and low-cost process that makes it suitable for addressing actual demands in III-V industry. This project will be undertaken under two parts, (i) a fundamental part in which the fundamental understanding of the plasma process will be addressed using spectroscopic methods and (ii) an application part in which the elaborated III-V thin films will be tested in solar cell devices.

The physics/chemistry and the plasma surface interaction in such deposition process involving III-V species (neutrals, excited and charged) has been poorly, if not, investigated making it an exciting medium to explore in the frame of this project. From an application perspective, it will be envisioned to deposit III-V thin films onto silicon substrate to test the possibility of creating low-cost tandem solar cells.

The successful PhD applicant will spend three years (full-time) at LPICM (Palaiseau, France) and at IPVF (Palaiseau, France). International graduates (with required entry requirements) are highly encouraged to apply as well.

 

Main missions

  • The candidate will report directly to the Deputy Programs Director of IPVF. He will work under the supervision of Dr. Karim Ouaras (CNRS researcher) and Prof. Pere Roca I Cabarrocas (IPVF Scientific Director, CNRS Research Director and Professor at École Polytechnique).
  • The PhD applicant will be invested in this project through different tasks: (i) plasma studies using in situ spectroscopy (emission and absorption) and plasma modeling; (ii) thin film deposition and optimization and (iii) material characterizations (SEM, TEM, XRD, Ellipsometry, …). In parallel, the PhD candidate will apply his expertise to envision the application of the thin films to be integrated in existing devices developed internally or even imagine new applications. Along with internal trainings in common material/plasma characterization methods, the PhD candidate will benefit from a large panel of internal and external collaborations.

Sought profile

Knowledge

      • Master degree (or equivalent) in a relevant subject area (Science or Engineering).
      • Strong background in Materials Science and surface engineering.
      • Excellent English language skills.

Knowhow

      • Experience in plasma process and fluid simulation is desirable.
      • Proficiency in spectroscopy physics will be an asset.
      • Communication (oral and writing)

Self-management skills

      • Autonomous.
      • Organizational and collaborative skills.
      • Results-oriented.

Contact

Cover letter and CV to be sent to: : karim.ouaras@polytechnique.edu and pere.roca@polytechnique.edu
Specify the title of the offer in the subject line of the email