Processing of copper-oxide films and their characterisation

stage niveau master 2 ; 5-6 mois

Laboratoire SIMaP (Grenoble)

Personnes à contacter par le candidat

Muriel Braccini :






Context: Copper oxide thin films are extensively studied due to their non-toxicity, low-cost production, relatively simple processing and abundant availability of their metal. In particular, Cu2O is a p-type semiconductor and its electronic structure makes it a material well suited for a wide range of applications such as solar cells, microelectronic and optoelectronic systems, batteries, gas sensors, catalysts, coatings for paints, etc. This material could therefore become a prime substitution candidate, especially in integrated devices, to address the sustainability issues we face.

Objectives of the internship: The subject of this internship is the elaboration of Cu2O thin films by thermal oxidation. The nature, the microstructure and the properties of these films depend on the elaboration conditions. Thus, different temperature ranges (low temperatures around 200°C and high temperatures around 900°C) and different atmospheres (partial pressure of O2, humidity) will be investigated. Finally, these oxidation treatments will concern copper in different forms: bulk (OFHC copper plate of 2 mm thick), in thin film of a few hundred nanometers on silicon substrate. The oxide layers obtained will be characterized by different chemical analysis techniques (Raman spectroscopy, X-ray diffraction) and microstructural analysis (Scanning Electron Microscopy). For the most « promising » layers, additional analyses would be carried out: optical properties by spectroscopic ellipsometry and mechanical properties by nanoindentation.

Student profile: Master M2 level (or last year of engineering school) in Materials Science program.

Internship duration: 5 to 6 months (starting in February-March 2023)

Location: SIMaP laboratory (Grenoble University domain)