IPVF Internship – Development of a wide-band gap perovskite for tandem application


Function: Master student

Contract Type: Internship

Starting Date: February 2022

Working Place: Palaiseau, France (Paris-Saclay technology cluster)

Duration: 6 months

Education: Master 2




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, TotalEnergies, Air Liquide, Horiba and Riber) and world-renowned academic research organizations (CNRS, Ecole Polytechnique), multi-disciplinary and international IPVF teams conduct research for clean energy technologies. Supported by the French State, IPVF is labelled Institute for Energy Transition (ITE).


IPVF at a glance:
• An ambitious Scientific and Technological Program (6 programs divided in 24 work packages): from tandem solar cell technologies to economy & market assessment, state-of-the art characterization, photocatalysis and breakthrough concepts.
• State-of-the-art technological platform (8,000m²): more than 100 cutting-edge equipments worth €30M, located in cleanrooms (advanced characterization, materials deposition, prototypes for fabrication, modelling…).
• High-standard Education program (M.S. and PhD students).





Metal halide perovskite top-cells are promising semiconductor to be paired with a Silicon bottom cell as it can convert more efficiently the UV-vis region of the solar spectrum. This technology, called tandem solar cell, allows to increase the th efficiency of solar cells (up to >40%) beyond the theoretical efficiency limit silicon (ca. 29%). So far, IPVF has fabricated 20% perovskite solar cells with a gap of 1.6 eV and developed perovskite solar modules with efficiency up to 18%. Along other ongoing optimization from the perovskite research team, wide-band gap perovskite materials are now attractive candidates to further improve the efficiency of the top-cell. Promising preliminary results up to 18% efficiency were obtained for a gap of 1.65 eV. The aim is now to further improve the gap of the perovskite, to validate the fabrication protocol on small-scale surface, and to study the intrinsic properties of this materials.




The main objective of this internship will be to optimize the formulation and the process deposition of a new wide-band gap perovskite layer. The candidate will join the “Perovskite Baseline Team” and work cooperatively with the “Upscale and stability Team”.

Tree combined technological steps are considered:

  1. Optimization of the process and formulation of the wide-band gap perovskite (complete solar cells and test samples).
  2. Integration of the perovskite on various cells architecture (NIP and PIN). Comparison with the actual state of the art of the laboratory.
  3. Stability test (under illumination, moisture, etc.) and preliminary tests on semi-transparent cells and modules.


The intern will have access to a large panel of equipments of our technological platform and be autonomous regarding the perovskite solar cells fabrication and most opto-electrical characterization. Advanced material characterization (XRD, SEM, etc.), stability test and process upscale will be established in collaboration with the experts of IPVF.





  • Material science and chemistry
  • Physics of semiconductor


  • Laboratory experience
  • Previous experience in thin-films and liquid-based deposition method.
  • Previous experience in clean room environment is a plus.
  • Previous experience in photovoltaics device fabrication and characterization is a plus.


Self-management skills

  • Strong teamwork skills
  • Curious and creative
  • Autonomous




Cover letter, CV and last academic transcripts to be sent to: marion.provost@ipvf.fr

Need a direct line?

Feel free to contact us for more information about our offers.

  • +33(0)1 69 86 58 60
  • contact@ipvf.fr
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