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Portail > Offres > Offre UMR9006-PHISCH-010 - (H/F) Postdoc cellules solaires tandem CIGS-Perovskite en couches minces à haut rendement : Caractérisation et modélisation pour l'optimisation des performances

(M/F) Postdoc high efficiency CIGS-Perovskite tandem thin film solar cells : Characterization and modeling for performance optimization

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Français - Anglais

Date Limite Candidature : vendredi 10 décembre 2021

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General information

Reference : UMR9006-PHISCH-010
Workplace : PALAISEAU
Date of publication : Friday, November 19, 2021
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 January 2022
Proportion of work : Full time
Remuneration : 2,743.70€ to 3,161.13€ gross per month depending on experience
Desired level of education : PhD
Experience required : Indifferent

Missions

Tandem solar cells are attracting a lot of attention because they offer a unique opportunity to move beyond the absolute conversion efficiency limit of single-junction solar cells of about 33% to a new limit at about 45%. Tandem solar cells consist of two single-junction solar cells stacked on top of each other, operating in specific regions of the solar spectrum, one infrared for the lower cell and one UV-visible for the upper cell. The upper cell must be transparent so that infrared light can reach the lower cell and be converted into electricity more efficiently. The ideal band gaps should be about 1 eV and 1.6-1.7 eV for the two cells, respectively. Currently, the main research activities are devoted to tandem cells based on the combination of a wafer silicon cell and a perovskite cell. This project presents an alternative approach of using a copper indium gallium diselenide (CIGS) thin film back cell as the back cell instead of the silicon cell. This is of great interest because CIGS is a commercially established technology with a very high conversion efficiency (23.3%) using thin-film deposition processes on simple glass, metal or plastic substrates. As the perovskite solar cell is also based on thin film technology, with an outstanding record efficiency of 24.2%, the CIGS-perovskite tandem solar cells will thus open a new path for all high efficiency thin film tandem solar cells and modules. This field is still in its infancy and the PERCISTAND project aims to become a major player in this field at the international level.

The project aims to accelerate the development of the CIGS-perovskite tandem technology from fundamental studies on fabrication processes, materials and interfaces, to the fabrication of complete devices, their characterization and optimization. The consortium's ambitious goal is to achieve a 30% yield in three years, based on a two-terminal configuration.

Activities

The central objective will be the characterization of the optical, electrical, structural and photovoltaic properties of materials, interfaces and devices in order to analyze, model and optimize their performances. Particular attention will be paid to the electrical optimization of the CIGS-perovskite interface, at the heart of the two-contact configuration. Participation in the device development stages is also desirable. Complete devices with CIGS and perovskite junctions will be developed with partners but also in-house at the laboratory. Innovative approaches such as 2D perovskite or lead-free materials will be initiated.

Skills

-- Physics, electrical engineering.
- Optical and electrical characterization of thin films, solar cells and modules.
- Characterization by electron spectroscopy and atomic force microscopy
- Knowledge of solar cell and module technologies, ideally perovskite
- Teamwork and problem solving

Work Context

The research will be conducted in the framework of the European PERCISTAND project (CIS perovskite tandems) recently awarded under the H2020 program. The project is coordinated by IMEC in Belgium and involves renowned academic and industrial partners in Europe: ZSW, KIT, EMPA, CNRS, TNO, VITO, Solaronix, Nice solar as well as two partners in the USA and Australia (NREL, ANU).
CNRS research group and thesis supervisor: Daniel Lincot (CIGS), Philip Schulz (Perovskite and interfaces), Jean François Guillemoles (Theory and physics), Nathanaelle Schneider (Chemistry and ALD), Jean Paul Kleider (Electrical transport properties and modelling, thesis supervisor), Stéphane Collin (Optics), Emmanuelle Deleporte (2D Perovskite), Muriel Bouttemy (Analytics).
The project will be conducted at IPVF, located south of Paris (www.ipvf.fr), in the heart of the new Paris-Saclay campus. The IPVF has about 8,000 m2 of space including 4,000 m2 of clean room laboratories, which allows for state-of-the-art studies in fabrication, characterization and modeling of materials, interfaces and solar cell devices. Research ranges from wafer-based silicon technologies to thin-film technologies based on CIGS, III-Vs such as GaAs or perovskites with the goal of developing ultra-high efficiency solar cells based on multi-junction approaches and new concepts.
Personnel: IPVF hosts about 150 researchers from different backgrounds, academic with CNRS, universities and Grandes Ecoles (Paris Saclay, Ecole Polytechnique, Chimie Paristech, CentraleSupelec...) or industrial with EDF and Total. They are specialized in the fields of physics, chemistry, material sciences, optics, nanosciences, etc., creating stimulating research environment.

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