Metal - Reduced Graphene Oxide Heterostructures on Glass substrate: Preparation and Characterization

In this paper we present the preparation and characterization of metal - reduced graphene oxide (RGO) heterostructures on glass substrates in order to determine the metal (Ni, Cr/ Au, Al) that is most suitable for photosensor application. A metal mask by shading was designed and fabricated to allow successive and selected area metal strips deposition on RGO layer on glass substrates. The quality of prepared RGO was investigated by means of Raman spectroscopy tacking into account both intensity ratio, ID/I G and the difference between the positions of D’ and G bands. The I-V characteristics recorded in dark, white light and UV irradiation conditions confirmed that metal (especially Al)-RGO heterostructures have photodetection properties which gives the possibility to obtain photodetectors having various metal electrodes configurations.