Oxidation of h-BN on strongly and weakly interacting metal surfaces

We used x-ray photoemission and absorption spectroscopies to study the influence of thermal molecular oxygen exposure on the h-BN/Co(0001) and h-BN/Au/Co(0001) systems. The spectral analysis was supported by density functional theory calculations. It is shown that oxygen can intercalate h-BN on Co(0...

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Published inNanotechnology Vol. 30; no. 23; p. 234004
Main Authors Shevelev, Viktor O, Bokai, Kirill A, Vilkov, Oleg Yu, Makarova, Anna A, Usachov, Dmitry Yu
Format Journal Article
LanguageEnglish
Published England IOP Publishing 07.06.2019
Subjects
h-BN
intercalation
oxidation
photoemission spectroscopy
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Summary:We used x-ray photoemission and absorption spectroscopies to study the influence of thermal molecular oxygen exposure on the h-BN/Co(0001) and h-BN/Au/Co(0001) systems. The spectral analysis was supported by density functional theory calculations. It is shown that oxygen can intercalate h-BN on Co(0001) and also be embedded into its lattice, replacing the nitrogen atoms. Upon substitution, the structures containing one (BN2O) and three (BO3) oxygen atoms in the boron atom environment are formed predominantly. In the case of gold-intercalated h-BN, only the (BN2O) structures are formed; the long-lasting oxygen exposures lead to etching of the h-BN layer.
Bibliography:NANO-120680.R1
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ISSN:0957-4484
1361-6528
DOI:10.1088/1361-6528/ab0863