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oai:figshare.com:article/33805297 2026-09-15T16:10:15Z portal_1197 item_type_3 month_year_09_2026

Data for Assessment of acid and thermal oxidation treatments for removing sp2 bonded carbon from the surface of boron doped diamond Samuel J. Cobb (6430169) Fraser Laidlaw (24456791) Geoffrey D. West (24748138) Georgia F. Wood (24944620) Mark E. Newton (1445038) Richard Beanland (768962) Julie V. Macpherson (1517371) Diamonds -- Surfaces Semiconductor doping Boron Micromachining Amorphous substances Oxidation Carbon Transmission electron microscopy Scanning transmission electron microscopy Electron energy loss spectroscopy Surfaces (Technology) -- Analysis Migrated from ePrints The presence of sp2 bonded carbon on a diamond or doped diamond surface, as a result of growth or processing, can affect material properties negatively, hence removal processes must be developed. Using boron doped diamond (BDD) we investigate the effectiveness of different removal methods via electrochemistry and transmission electron microscopy. We focus on two BDD surfaces, one processed by ns laser micromachining and the second which contains sp2 bonded carbon as a result of chemical vapour deposition (CVD) growth. After micromachining a layer of ordered graphite sits on the BDD surface, topped by fissured amorphous carbon (total thickness ~ μm). Oxidative acid treatment at elevated temperature cannot remove all the sp2 bonded carbon and much smaller clusters of perpendicularly-orientated graphite (tens of nm in diameter), capped with a thinner layer of amorphous carbon – that we term “denatured graphite” – remain. In contrast, thermal oxidation in air at 600 °C is capable of all cluster removal, and can also be used to remove sp2 bonded carbon from as-grown CVD-grown BDD. Such understanding is important to any application where sp2 bonded surface carbon resulting from CVD growth or laser processing is detrimental for the intended application, e.g. in diamond quantum technology, photonics and electrochemistry.<br><br>Data record consists of a zip archive, containing the raw data files in .dm4 format, and an accompanying readme file. This dataset includes data from experimental transmission electron microscopy, and data files are named after the corresponding figure in the related article. Further information about specific data files can be found in the accompanying readme file. 2020-07-27T00:00:00Z Dataset Dataset 10.82444/warw.33805297.v1 https://figshare.com/articles/dataset/Data_for_Assessment_of_acid_and_thermal_oxidation_treatments_for_removing_sp2_bonded_carbon_from_the_surface_of_boron_doped_diamond/33805297 CC BY 4.0