Job description


  • Entry level
  • No Education
  • Salary to negotiate
  • Le Bourget-du-Lac


Vacancy details

General information

The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.

Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.

The CEA is established in ten centers spread throughout France


Division description
CEA Tech is the CEA's (the French Atomic Energy and Alternative Energy Commission) technology research unit. CEA Tech's three labs—Leti, Liten, and List—develop a broad portfolio of technologies for ICTs, energy, and healthcare.

CEA Tech leverages a unique innovation-driven culture and unrivalled expertise to develop and disseminate new technologies for industry, effectively bridging the gap between the worlds of research and business.

CEA Tech also provides businesses with access to Key Enabling Technologies developed by other CEA operating divisions.

Description de l'unité
Liten is a major European research institute and a driving force behind the development of the sustainable energy technologies of the future. The institute is spearheading the EU's efforts to limit dependency on fossil fuels and reduce greenhouse gas emissions in three key areas: renewable energy, energy efficiency/storage and development of materials.

The only European research institute to span the entire value chain from the development of materials to pre-industrialization, Liten's unique combination of human and technological resources helps its industrial partners achieve competitive advantage through the development of cutting-edge renewable energy, energy efficiency and novel material technology.

The institute builds long-term relationships with its industrial partners that range in size from SMEs to multinationals, in order to develop a wide range of technologies that include the development of new and advanced materials, components as well as the optimization/development of existing or new industrial processes. This privileged relationship with Industry sees us put in place over 400 research contracts a year

Position description
Materials, solid state physics

Fixed-term contract

Job title
CDD - Development of high efficiency silicon-perovskite tandem solar cells H/F

Socio-professional category

Contract duration (months)

Job description

Today, single junction silicon technology dominates the photovoltaic market, with more than 90 % of market share. However, the power conversion efficiency of silicon solar cells, with a reported record at 26.7 %, has neared its theoretical limit (29 %). To reduce thermalization losses and push efficiency further, silicon cells have been coupled to higher band gap semi-conductors to form tandem cells. Coupling silicon to perovskites appears as a particularly promising solution since perovskites show high performance (25.2 % power conversion efficiency has been reached in a few years), band-gap and thickness tunability and processing versatility. Therefore, silicon/perovskite tandems have the potential to become a high-efficiency technology in the future of photovoltaics. Since 2015, several demonstrations have already been published, either in 2-terminal configuration (2T, both cells connected in series) or in 4-terminal architecture (4T, cells stacking), with record efficiencies above 29 % today.

Yet, a number of challenges are still to be met to ensure a bright industrial future for Si-perovskite tandem. Significantly improving device active area while maintaining high power conversion efficiency with good stability over time is probably one the most important.

The activity will be focused on the large scale deposition of perovskite absorber materials and their integration into tandem PV devices to reach highly efficient and stable solar cells.

More specifically, the post holder will:

- Develop new inks complying with processing requirements

- Develop coating / drying / curing processes to reach high-quality films

- Develop experimental protocols to identify and alleviate losses in devices

Applicant Profile
The successful candidate should hold a PhD in chemistry, physics, materials science or engineering, be highly motivated and have excellent problem-solving skills.

Specific expertise in PV device engineering & physics, solvent-based processing techniques, as well as previous experience in the field of perovskite PV would be an advantage.

Skills: photovoltaics, materials, physics, processing.

About the company


Related jobs