Materials division
Photovoltaics theme
Areas of expertise – Research areas
GeePs has more than forty years of experience in the field of photovoltaics (PV). Through the Materials and PV theme, it specializes in advanced characterization: electrical and optoelectronic characterization of devices, characterization of materials by Raman microscopes, electron, and atomic resolution techniques by atomic force microscopy (AFM), physico-chemical characterization by electronic spectroscopies (XPS, UPS), characterization by luminescence techniques in constant, modulated or transient mode, admittance spectroscopy and DLTS.
In parallel with these numerous characterization benches, he develops numerical and analytical modeling tools. It relies on characterization to allow its analysis and improve the understanding of materials, devices, and photovoltaic systems.
Current themes
- Silicon and its devices Heterojunction (HET) and its interface a-Si:H/c-Si, Homojunction (HJ) with a poly-Si/SiOx/c-Si interface
- New thin film materials: new absorbers, including perovskites, organic semiconductors, Zn-IV-N2 alloys without indium/gallium
- Multi-purpose structures: tandem two terminals and four terminals, and innovative three-terminal tandem structures (GeePs 2018 patent); large-gap cells for III-V, perovskites, organic, and CIGS material multi-purpose.
- Electrically active defects
- PV systems: characterization of operando modules in real conditions with characterization of these (SIRTA platform) as well as integration of photovoltaics in the network ( «smart-grids»).
Platforms and equipments
Members
- Jean-Paul Kleider
- James Connolly
- José Alvarez
Publications
- Surface Photovoltage Study of Metal Halide Perovskites Deposited Directly on Crystalline Silicon, Vesselin Donchev et al., ACS Omega 2023, 8, 9, 8125–8133, Publication https://doi.org/10.1021/acsomega.2c07664
- Cross-sectional Kelvin probe force microscopy on III–V epitaxial multilayer stacks: challenges and perspectives, Mattia da Lisca et al., Beilstein J. Nanotechnol. 2023, 14, 725–737. https://doi.org/10.3762/bjnano.14.59
- Félix Gayot, Elise Bruhat, Muriel Bouttemy, Mathieu Frégnaux, Eric De Vito, Jean-Paul Kleider, Stéphane Cros, Matthieu Manceau, “Elucidating Interfacial Limitations Induced by an ALD-grown Tin Oxide Electron Selective Layer in N-I-P Perovskite-Based Solar Cells”, ACS Appl. Energy Mater. 6, 11849–11860 (2023), doi: 10.1021/acsaem.3c01713
- Stefano Soresi, Mattia da Lisca, Claire Besancon, Nicolas Vaissiere, Alexandre Larrue, Cosimo Calo, José Alvarez, Christophe Longeaud, Ludovic Largeau, Pablo Garcia Linares, Eric Tournié, Jean-Paul Kleider, Jean Decobert, “Epitaxy and characterization of InP/InGaAs tandem solar cells grown by MOVPE on InP and Si substrates”, EPJ Photovoltaics 14, 1 (2023), doi: 10.1051/epjpv/2022027
- B. Li, A. Migan-Dubois, C. Delpha, D. Diallo, Evaluation and improvement of IEC 60891 correction methods for I-V curves of defective photovoltaic panels, Solar Energy. 216 (2021) 225–237. https://doi.org/10.1016/j.solener.2021.01.010.
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