Centre National de la Recherche Scientifique (CNRS) will be represented by 2 different departments: 1) The CNRS-IPVF (UMR 9006) - Institut Photovoltaique d’Ile de France - is an object-oriented research organisation for photovoltaic (PV) applications. IPVF’s research activities include ultrathin and high-efficiency chalcogenide thin film-based technologies, high yield and breakthrough approaches including substantial work on photonics and optoelectronics, as well as the development of new methods for studying electrical, optical and physical-chemical properties using luminescence, microscopy and spectroscopy and modelling. 2) The CNRS-C2N - Centre for Nanosciences and Nanotechnology - holds one of the five largest clean-room facilities in France (2800 m²) and world-class characterisation tools. Its research activities cover the fields of material science, nanophotonics, nanoelectronics, and nanotechnologies. The SUNLIT team's work on light management has enabled the demonstration of record ultrathin solar cells made of GaAs and CIGS. Main infrastructures available to carry out the project research activities include i) Thin film deposition techniques for TCO, such as sputtering, evaporation atomic layer deposition; ii) Thin metal grid optimisation techniques, e.g., lithography, laser scribing; iii) Material and devices characterization tools, e.g., SEM, TEM, EDX, GE-OES, XRF, XRD, transmittance and reflectance measurements, solar simulators and J-V measurement equipment; iv) Optoelectronic characterisation and modelling; v) Full solar cell processing line; vi) Outdoor testing site; vii) Texturation process.