Interaction between Yb3+ doped glasses substrates and graphene layers by raman spectroscopy

• Published in: Thin solid films Vol. 712; p. 138315
• Main Authors: Campanelli, D.A., Menezes, J.W., Valsecchi, C., Zegarra, L.B.R., Jacinto, C., Armas, L.E.G.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 31.10.2020
• Subjects: Doping effect; Graphene interaction; Raman spectroscopy; Rare earth substrates; Ytterbium substrate; Graphene interaction; Doping effect; Raman spectroscopy; Ytterbium substrate; Rare earth substrates
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2020.138315

•Interaction between 5.0 wt.% (Q5) and 20 wt.% (Q20) Yb3+ doped phosphate glasses substrates.•with single layer (1L) and bilayer (2L) graphene by raman spectroscopy.•The interaction is studied in terms of the shifting of the G, 2D and 2D’ bands of graphene.•Interaction is higher in 1L than in 2L graphene on more doped substrate (Q20).•Higher quantity of Yb3+ ions increases the interaction. We report the interaction between 5.0 wt.% and 20 wt.% Yb3+ doped phosphate glasses substrates with graphene single layer (1L) and bilayer (2L) by Raman spectroscopy. This interaction is studied in terms of shifting of the G, 2D and 2D’ bands of graphene, which is higher in 1L than in 2L graphene on the 20% Yb3+ substrate, in respect to the 5.0 wt.% substrate. Furthermore, changes in the full width at half maximum of the G, 2D and 2D’ bands, together with the I2D/IG ratio, for doped and undoped substrates, reveal this interaction. Additionally, when a single layer graphene is found on the surface of both substrates, some Raman peaks on the less doped sample are absent, whereas they are present on the more doped sample, indicating that the presence of Yb3+ ions increases the interaction between the substrate and the single layer graphene. The reported results give insights about graphene interaction with doped rare earth substrates.