EDF – Internship – Stability and aging analysis of Perovskite-based solar cells through indoor reliability studies


Education: Master student (M2)
Contract type: Internship
Starting date: March 2023
Duration: 6 months 
Working Place: IPVF, Palaiseau (Paris-Saclay technology cluster) 



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).  


To bridge the gap between education and the world of work, EDF welcomes more than 1 500 interns every year studying for qualifications that range from a post high school certificates to master’s degrees. In the context of its research activities in photovoltaic (PV), the R&D department of EDF contributes to the “Institut Photovoltaïque d’Île-de-France” IPVF.


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).    



Job context

Today, renewable solar energy is a major and important contributor to achieving energetic transition and climate change mitigation targets. Consequently, much research is being held and various new technologies are surging to surpass the efficiency limits and cost burdens of the existing technologies. Perovskite solar cells are the new rising stars of the field, reaching high efficiencies and coming a long way toward promising results in only over a decade of timeline. Nonetheless, they present many challenges from which operational stability remains a significant problem. In that regard, it is of great relevance to increase the technological maturity to prove the capacity of real-world stability and forecast an operational lifespan within an experimentally feasible timescale. Therefore, an agreement among experts in the field on methodologies for verifying the stability of perovskite solar cells was launched to set uniformity in the experimental methods and reported parameters by trying to replicate the outdoor real conditions in accelerated indoor aging tests. However, the outdoor environment presents a high level of complexity, data is still lacking analysis and comparisons, and few tests and research reports have been completed, which makes it more challenging to set protocols and investigate the results.


Main missions

The main objective of the internship is to perform various indoor measurements on perovskite-based solar cells.

During the internship, collaboration with the stability and reliability team of solar cells will be established to improve the solar cells encapsulation process and study the stability measurements by analyzing I(V) curves under various conditions of temperature, humidity, and irradiance.

Aging measurements under several conditions will be carried out in a climatic chamber and compared with: (i) literature review and (ii) measurements conducted in outdoor conditions.


Expected profile



• Materials science
• Physics of semiconductors
• Thin films
• Optical and Electrical 

• Characterization



• Laboratory experience
• Previous experience in photovoltaics device fabrication and characterization is a plus


Self-management skills

• Strong teamwork skills
• Curious, enterprising and creative
• Proactive and autonomous



Cover letter, résumé and last school transcripts to be sent to:

jorge.posada@edf.fr and karim.medjoubi@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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