Offres d’emploi

Optical characterization for 3rd generation solar cells

Contract type: Intership

Starting date: From now

Duration: 4-7 months

Working Place: Palaiseau

Education: Master / Engineering students

Salary: Paid internship

IPVF in brief

The “Institut Photovoltaïque d’Île-de-France” IPVF aims at becoming one of the main global research, innovation and education center in the field of photovoltaic solar energy. Composed with international well-known industrials, leading in PV industry (EDF, Total, Air Liquide, Horiba and Riber) and academic research teams (CNRS, Ecole Polytechnique), IPVF wants to increase performances and competitiveness of PV solar cells and develop new breakthrough technologies thanks to:

      • A research program : 5 programs and 12 projects
      • Experimental laboratories open to PV actors : more than 70 state-of-the-art tools, in a dedicated IPVF building
      • Education program with a master and PhD students

Job context

Single junction solar cells are limited to 30% of power conversion efficiency by the Shockley Queisser limit. To overcome this threshold, several innovative strategies can be considered. In particular, to harvest more energy from blue photons, it is possible to collect carriers before they relax their kinetic energy (hot carriers solar cells) or to generate several excitons with a single photon (singlet fission).

The development of these promising concepts requires not only the growth of appropriate materials, but also the expertise in analyzing the behavior of the samples under scrutiny to assess their potentials and suggest further improvements.

 

Main missions

The aim of this internship will be develop experimental approaches to perform advanced optical characterization of 3rd generation solar cells. The studied system and the selected technique will be discussed with the intern, but could include :

      • Hot carriers in perovskites solar cells (how to account for possible degradation under intense illumination?)
      • Correlation measurements in singlet fission emission (how to discriminate a two-photon process, and two independent single photon processes?)

The internship will first focus on bibliography to evaluate the state of the art in the chosen technique, then aim at producing a proof of concept. Depending on the student’s profile, it could be more theory-oriented, or more experiment-oriented but should include both perspectives at the end of the day.

Sought profile

Knowledge

  • Basic solar cell physics
  • Basic thermodynamics

Knowhow

  • Optics

Self-management skills
(Weekly supervision)

  • Curiosity
  • Patience

Contact

Cover letter and résumé to be sent to: daniel.suchet@polytechnique.org
Specify the title of the offer in the subject line of the email