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Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene

Matthew J. Webb, Craig Polley, Kai Dirscherl, Gregory Burwell, Pål Palmgren, Yuran Niu, Anna Lundstedt, Alexei A. Zakharov, Owen Guy Orcid Logo, Thiagarajan Balasubramanian, Rositsa Yakimova, Helena Grennberg

Applied Physics Letters, Volume: 105, Issue: 8, Start page: 081602

Swansea University Author: Owen Guy Orcid Logo

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DOI (Published version): 10.1063/1.4893781

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...

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Published in: Applied Physics Letters
Published: 2014
URI: https://cronfa.swan.ac.uk/Record/cronfa19736
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first_indexed 2014-12-13T02:56:44Z
last_indexed 2019-08-09T19:52:16Z
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spelling 2019-08-09T15:16:24.4774540 v2 19736 2014-12-12 Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene c7fa5949b8528e048c5b978005f66794 0000-0002-6449-4033 Owen Guy Owen Guy true false 2014-12-12 CHEM 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. Journal Article Applied Physics Letters 105 8 081602 31 12 2014 2014-12-31 10.1063/1.4893781 COLLEGE NANME Chemistry COLLEGE CODE CHEM Swansea University 2019-08-09T15:16:24.4774540 2014-12-12T14:49:33.9578669 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Matthew J. Webb 1 Craig Polley 2 Kai Dirscherl 3 Gregory Burwell 4 Pål Palmgren 5 Yuran Niu 6 Anna Lundstedt 7 Alexei A. Zakharov 8 Owen Guy 0000-0002-6449-4033 9 Thiagarajan Balasubramanian 10 Rositsa Yakimova 11 Helena Grennberg 12
title Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene
spellingShingle Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene
Owen Guy
title_short Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene
title_full Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene
title_fullStr Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene
title_full_unstemmed Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene
title_sort Effects of a modular two-step ozone-water and annealing process on silicon carbide graphene
author_id_str_mv c7fa5949b8528e048c5b978005f66794
author_id_fullname_str_mv c7fa5949b8528e048c5b978005f66794_***_Owen Guy
author Owen Guy
author2 Matthew J. Webb
Craig Polley
Kai Dirscherl
Gregory Burwell
Pål Palmgren
Yuran Niu
Anna Lundstedt
Alexei A. Zakharov
Owen Guy
Thiagarajan Balasubramanian
Rositsa Yakimova
Helena Grennberg
format Journal article
container_title Applied Physics Letters
container_volume 105
container_issue 8
container_start_page 081602
publishDate 2014
institution Swansea University
doi_str_mv 10.1063/1.4893781
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemistry{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemistry
document_store_str 0
active_str 0
description 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.
published_date 2014-12-31T03:23:15Z
_version_ 1763750754526429184
score 11.013799

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