Post-doc offer: Graphene assisted III-V layer transfer for low-cost high-efficiency photovoltaics (M/W)

2 Sep 2023
Job Information

Organisation/Company

CNRS

Department

Centre de Nanosciences et de Nanotechnologies

Research Field

Engineering
Physics
Technology

Researcher Profile

Recognised Researcher (R2)

Country

France

Application Deadline

22 Sep 2023 – 23:59 (UTC)

Type of Contract

Temporary

Job Status

Full-time

Hours Per Week

35

Offer Starting Date

1 Nov 2023

Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme

Is the Job related to staff position within a Research Infrastructure?

No

Offer Description

III-V are part of a material family with a wide range of optoelectronic applications (LEDs, lasers, solar cells, etc.), and their integration with other materials would allow the manufacture of new generation devices: optical functions on silicon, flexible substrates for new applications. We are particularly interested in transferring epitaxial III-V layers and recycling the original substrate for new growths. This process would open the door to high-efficiency solar cells at a low cost (the substrate represents 80% of the final cost of the cell). To do this, we are developing a method of epitaxy of III-V materials with an interlayer of graphene. This layer of graphene allows the resumption of epitaxy while introducing a mechanically weaker plane allowing exfoliation. This project represents both a technological interest, through the development of an original process, and scientific interest, by bringing into play new graphene-assisted growth mechanisms. The post-doctoral student will therefore intervene within this project on these different stages, by improving the exfoliation stages thanks to characterization work, in particular on the physico-chemistry of surfaces and interfaces.

Specific tasks may include, but are not limited to:
– The preparation and fabrication of surfaces for the successive growths in clean-room: graphene transfer and of epitaxial layers, chemical preparation of the surface.
– The characterization of existing surfaces and interfaces by XPS, AFM, microscopy and Raman.
– The study of the influence of graphene deposition upon the epitaxy quality.

The Center for Nanosciences and Nanotechnologies (C2N) is a joint research unit of the CNRS, the University Paris-Saclay, and the University Paris Cité. The C2N hosts 410 staffs, and is located in Paris region at Palaiseau, within the Paris Saclay Campus.
The laboratory is divided in four scientific departments: photonics, materials, nanoelectronics, microsystems and nanobiofluidics.
This mission is carried out in collaboration between the SUNLIT team at the Center for Nanosciences and Nanotechnologies, and the “Electrochemistry and Physico-Chemistry at Interfaces” (EPI) group from the Lavoisier Institute of Versailles. The successful candidate will be based at C2N and will be required to make frequent trips to ILV.
The SUNLIT team is working on the development of new architectures and manufacturing processes for solar cells that are both high-efficiency, low cost and environmental impact. The activities of the EPI group are related to the modification of the surface properties of materials by chemical and electrochemical processes associated with advanced surface analysis techniques developed in its CEFS2 spectroscopy centre.

Requirements

Research Field

Engineering

Education Level

PhD or equivalent

Research Field

Physics

Education Level

PhD or equivalent

Research Field

Technology

Education Level

PhD or equivalent

Languages

FRENCH

Level

Basic

Research Field

Engineering

Years of Research Experience

1 – 4

Research Field

Physics

Years of Research Experience

1 – 4

Research Field

Technology

Years of Research Experience

1 – 4

Additional Information
Eligibility criteria

The ideal candidate profile includes:
– Ph.D. in chemistry, physics, or material science
– Knowledge in material science, thin films with good experimental skills
– A first experience in material growth and/or clean room work will be an advantage
– A track record of high-quality scientific publications is desirable

Website for additional job details

https://emploi.cnrs.fr/Offres/CDD/UMR9001-AMADEL-006/Default.aspx

Work Location(s)

Number of offers available

1

Company/Institute

Centre de Nanosciences et de Nanotechnologies

Country

France

City

PALAISEAU

Where to apply

Website

https://emploi.cnrs.fr/Candidat/Offre/UMR9001-AMADEL-006/Candidater.aspx

Contact

City

PALAISEAU

STATUS: EXPIRED