IPVF Post-doc: Development of a Perovskite/Silicon Two Terminal Tandem Device
Contract type: COD
Starting date: ASAP
Duration: 36 months
Working Place: IPVF – Palaiseau (Paris area) / Travel to CEA-INES (Bourget-du-Lac) expected
Education: PhD in Materials Science (or other relevant field)
Salary: Profil dependant
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).
CEA-INES in brief
INES, National Institute for Solar Energy is a global leader in R&D and education for advanced photovoltaic solar technologies, their integration into electrical systems and smart energy management. Its R&D facilities are operated by CEA and integrates laboratories from the CEA and joint research units from the University of Savoie Mont Blanc & CNRS.
With its 500 talents and with Best-in-class equipment, INES brings expertise to the industry, from proof of concept to technology transfer.
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas:
- defense and security,
- low carbon energies (nuclear and renewable energies),
- technological research for industry,
- fundamental research in the physical sciences and life sciences.
According to Reuter’s rankings, the CEA is one of the world’s most innovative public research organisation. That’s the conclusion of Reuters’ “Top 25 Global Innovators – Government”, a list that identifies and ranks publicly funded institutions.
The efficiency of the silicon technology – that represents 90 % of the market – comes closer and closer to its theoretical limit (c.a. 29%). In order to further improve the photovoltaic (PV) conversion efficiency significantly, technological breakthroughs are needed. A promising pathway towards higher efficiencies is to combine the crystalline silicon solar cells with a material that converts more efficiently the most energetic part of the solar spectrum (i.e. UV-visible region). This technology, called tandem solar cell, consists in stacking two difference systems to push the theoretical efficiency limit from 29% up to 42%.
Among the different materials available to fabricate the top cell of the tandem device, hybrid perovskites are particularly promising candidates. These materials have been recently applied to PV with a first proof of concept in 2009. Since then, a massive worldwide research effort has allowed to reach, in ten years only, efficiencies up to 25.2 % in single junction and up to 29% in tandem with silicon. These impressive performances have been obtained on small-scale surface cells and the tendency is now to develop up-scalable processes.
IPVF and CEA-INES are dedicating strong research efforts at high-level that have resulted in a consolidated expertise in the development of perovskite-based solar cell technologies. For instance, CEA-INES has recently been able to build mini-modules showing efficiencies higher than 20% on 11 cm2. Besides, IPVF reached 15% perovskite mini-modules on 16 cm2. Finally, CEA possesses strong assets in PV as the European leader in the development of heterojunction silicon solar cells with demonstrated efficiencies up to 24.6 %.
In this context, IPVF and CEA-INES are mutualizing research efforts in order to develop a two terminals Perovskite on Silicon tandem device based on the Heterojunction technology developed at CEA-INES. This collaboration particularly focuses on the development of a two-step deposition process combining the growth of an inorganic precursor by evaporation layer followed by its transformation into Perovskite compound by a wet method.
The candidate will directly report to the Deputy Programs Director of IPVF and will work in strong collaboration with CEA-INES lab.
She/he will integrate a dynamic and talented team driven by innovation and results.
The post doc will be hosted at IPVF (70 % of the time) and CEA – INES (30 %) and will be in charge of the exchanges between these two institutes.
The postdoctoral researcher will be in charge of:
- Optimizing the perovskite top-cell fabrication by evaporation and wet processes.
- Integrating the developed perovskite into a 2T tandem structure.
- Characterizing the opto-electrical properties of the materials and devices.
- Materials science and/or physics/chemistry of semiconductors.
- Vacuum-based deposition.
- Advanced characterization.
- Hands-on experience with materials deposition by evaporation processes.
- Proficiency in perovskite-based solar cell is a plus.
- Work experience in cleanroom environment is an asset.
- Strong analysis skills.
- Rigorous and team player.
- Excellent organizational and collaborative skills.