Revealing lattice disorder, oxygen incorporation and pore formation in laser induced two-photon oxidized graphene
| Autor: | Braulio S. Archanjo, Carlos A. Achete, Erlon H. Martins Ferreira, Alexei Kuznetsov, Andreas Johansson, M.E. Mendoza, Mika Pettersson, Jukka Aumanen, Pasi Myllyperkiö |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
hapetus
Materials science säteilytys EELS Oxide 02 engineering and technology 010402 general chemistry elektronit 01 natural sciences law.invention chemistry.chemical_compound symbols.namesake raman spectroscopy law photons General Materials Science ta116 energia fotonit ta114 irradiation Graphene Electron energy loss spectroscopy grafeenioksidi General Chemistry 021001 nanoscience & nanotechnology Laser photo-oxidation 0104 chemical sciences laserit chemistry Electron diffraction Chemical engineering Amorphous carbon oxidation (active) Transmission electron microscopy symbols TEM graphene oxide electron diffraction 0210 nano-technology Raman spectroscopy lasers |
| Zdroj: | Carbon. 143:720-727 |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2018.11.070 |
| Popis: | Laser induced two-photon oxidation has proven to be a reliable method to pattern and control the level of oxidation of single layer graphene, which in turn allows the development of graphene-based electronic and optoelectronic devices with an all-optical method. Here we provide a full structural and chemical description of modifications of air-suspended graphene during the oxidation process. By using different laser irradiation doses, we were able to show via transmission electron microscopy, electron energy loss spectroscopy, electron diffraction and Raman spectroscopy how graphene develops from its pristine form up to a completely oxidized, porous and amorphous carbon layer. Furthermore, the gradual control of the oxidation process is used to correlate lattice disorder, oxygen incorporation and pores formation in graphene oxide. This study provides a model system that will benefit research on graphene and other two-dimensional materials. |
| Databáze: | OpenAIRE |
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