Seminaire Axel ROUVILLER 07/07/2026

Electromecanical characterization of Cu₂O nanowire networks

Post-Doc, Axel – Rouviller

Université Grenoble Alpes, CNRS, Grenoble INP, SIMaP, 38000 Grenoble, France

Université Grenoble Alpes, CNRS, Grenoble INP, LMGP, 38000 Grenoble, France

Abstract

One of the main obstacles to the development of new electronic devices, such as photovoltaic panels, LEDs, smart windows, is the lack of p-type semiconductors combining both high electrical conductivity values and transparence in the visible range. Studies carried out at the LMGP laboratory have demonstrated the possibility of forming, by aerosol-assisted chemical vapor deposition (AACVD), Cu₂O/CuCrO₂ nanocomposites in which Cu₂O nanograins are contained in a CuCrO₂ matrix. These p-type semiconductor nanostructures turned out to have promising optoelectronic properties, with an average visible transmittance of 55% and an electrical resistivity of 0.05 Ω.cm [1]. The NANOCOMPOSITE project, supported by the ANR, aims to develop the elaboration of this type of nanostructure in a controlled manner, by covering Cu₂O nanowire networks, synthesized by hydrothermal process, with a thin layer of CuCrO₂, deposited by AACVD. The work in this presentation is part of this project and concerns the development by Felhing reaction method of Cu₂O nanowire networks of different densities on silicon substrates. Once these networks were characterized, they were deposited on flexible kapton substrates, which allowed for electrical measurements to be carried out under mechanical stress, using a traction plate at the SIMaP laboratory.

Short Bio/CV

I completed my thesis at the university of Caen (France) in the CIMAP laboratory. During my PhD, I worked on the growth and characterization of both SrVO₃ and Sr₂V₂O₇ thin films, using reactive sputtering deposition technique, for opto-electronics applications. Since February 2026, I joined the NANOCOMPOSITE ANR project, coordinated by Jean-Luc Deschanvres, as a Post-Doc. My work on this project consists, firstly, in the elaboration of Cu₂O nanowire networks on flexible substrates by hydrothermal growth process at LMGP laboratory. Once these depositions have been performed, I carry out electromecanical characterizations of these nanowires at SIMaP laboratory in order to              evaluate their compatibility and adequateness as flexible P-type semiconductors.