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EnglishStability in ambient air or in vacuum-controlled atmosphere of molecular oxygen-induced p-type doping of graphene monolayer on SiO2 substrate on Si is investigated by micro-Raman spectroscopy and atomic force microscopy (AFM). The Raman 2D and G bands spectral positions and amplitude ratio are affected by the permanence in air atmosphere in a time scale of months whereas the vacuum safely maintains the doping effects determined through Raman bands. No morphological effects are induced by the doping and post-doping treatments. A reactivity of ambient molecular gas with stably trapped oxygen is suggested to induce the doping modification.
| Data di pubblicazione: | 2016 |
| Titolo: | Effect of air on oxygen p-doped graphene on SiO2 |
| Autori: | |
| Citazione: | Piazza, A., Giannazzo, F., Buscarino, G., Fisichella, G., La Magna, A., Roccaforte, F., et al. (2016). Effect of air on oxygen p-doped graphene on SiO2. PHYSICA STATUS SOLIDI. A, APPLICATIONS AND MATERIALS SCIENCE, 213(9), 2341-2344. |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1002/pssa.201532909 |
| Abstract: | Stability in ambient air or in vacuum-controlled atmosphere of molecular oxygen-induced p-type doping of graphene monolayer on SiO2 substrate on Si is investigated by micro-Raman spectroscopy and atomic force microscopy (AFM). The Raman 2D and G bands spectral positions and amplitude ratio are affected by the permanence in air atmosphere in a time scale of months whereas the vacuum safely maintains the doping effects determined through Raman bands. No morphological effects are induced by the doping and post-doping treatments. A reactivity of ambient molecular gas with stably trapped oxygen is suggested to induce the doping modification. |
| URL: | http://www.interscience.wiley.com/ |
| Settore Scientifico Disciplinare: | Settore FIS/01 - Fisica Sperimentale |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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http://hdl.handle.net/10447/216842
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