Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene
(2014) In Applied Physics Letters 105(8).- Abstract
- By combining ozone and water, the effect of exposing epitaxial graphene on silicon carbide to an aggressive wet-chemical process has been evaluated after high temperature annealing in ultra high vacuum. The decomposition of ozone in water produces a number of oxidizing species, however, despite long exposure times to the aqueous-ozone environment, no graphene oxide was observed after the two-step process. The systems were comprehensively characterized before and after processing using Raman spectroscopy, core level photoemission spectroscopy, and angle resolved photoemission spectroscopy together with low energy electron diffraction, low energy electron microscopy, and atomic force microscopy. In spite of the chemical potential of the... (More)
- By combining ozone and water, the effect of exposing epitaxial graphene on silicon carbide to an aggressive wet-chemical process has been evaluated after high temperature annealing in ultra high vacuum. The decomposition of ozone in water produces a number of oxidizing species, however, despite long exposure times to the aqueous-ozone environment, no graphene oxide was observed after the two-step process. The systems were comprehensively characterized before and after processing using Raman spectroscopy, core level photoemission spectroscopy, and angle resolved photoemission spectroscopy together with low energy electron diffraction, low energy electron microscopy, and atomic force microscopy. In spite of the chemical potential of the aqueous-ozone reaction environment, the graphene domains were largely unaffected raising the prospect of employing such simple chemical and annealing protocols to clean or prepare epitaxial graphene surfaces. (C) 2014 AIP Publishing LLC. (Less)
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https://lup.lub.lu.se/record/4800367
- author
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Physics Letters
- volume
- 105
- issue
- 8
- article number
- 081602
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- wos:000342753500017
- scopus:84907326325
- ISSN
- 0003-6951
- DOI
- 10.1063/1.4893781
- language
- English
- LU publication?
- yes
- id
- e6ce5d2c-7d8f-4979-8de5-cee7778731af (old id 4800367)
- date added to LUP
- 2016-04-01 10:09:10
- date last changed
- 2022-01-25 20:14:15
@article{e6ce5d2c-7d8f-4979-8de5-cee7778731af, abstract = {{By combining ozone and water, the effect of exposing epitaxial graphene on silicon carbide to an aggressive wet-chemical process has been evaluated after high temperature annealing in ultra high vacuum. The decomposition of ozone in water produces a number of oxidizing species, however, despite long exposure times to the aqueous-ozone environment, no graphene oxide was observed after the two-step process. The systems were comprehensively characterized before and after processing using Raman spectroscopy, core level photoemission spectroscopy, and angle resolved photoemission spectroscopy together with low energy electron diffraction, low energy electron microscopy, and atomic force microscopy. In spite of the chemical potential of the aqueous-ozone reaction environment, the graphene domains were largely unaffected raising the prospect of employing such simple chemical and annealing protocols to clean or prepare epitaxial graphene surfaces. (C) 2014 AIP Publishing LLC.}}, author = {{Webb, Matthew J. and Polley, Craig and Dirscherl, Kai and Burwell, Gregory and Palmgren, Pal and Niu, Yuran and Lundstedt, Anna and Zakharov, Alexei and Guy, Owen J. and Thiagarajan, Balasubramanian and Yakimova, Rositsa and Grennberg, Helena}}, issn = {{0003-6951}}, language = {{eng}}, number = {{8}}, publisher = {{American Institute of Physics (AIP)}}, series = {{Applied Physics Letters}}, title = {{Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene}}, url = {{http://dx.doi.org/10.1063/1.4893781}}, doi = {{10.1063/1.4893781}}, volume = {{105}}, year = {{2014}}, }