Oxidation of Epitaxial Silicene on Ag(111)

Solonenko, Dmytro; Selyshchev, Oleksandr; Zahn, Dietrich R. T.; Vogt, Patrick

doi:10.1002/pssb.201800432

Cited by 14 publications

(14 citation statements)

References 27 publications

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“…Another method for the oxidation of Ag(111)/ESIL is to expose the samples to different doses of molecular oxygen. [124] In agreement with the previous example, the formation of SiO 2 clusters was observed. These results suggest that the controlled oxidation of 2D SIL is not easy to achieve.…”

Section: Introduction Of Single Atomssupporting

confidence: 92%

The Covalent Functionalization of Surface‐Supported Graphene: An Update

et al. 2022

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In the last decade, the use of graphene supported on solid surfaces has broadened its scope and applications, and graphene has acquire a promising role as a major component of high‐performance electronic devices. In this context, the chemical modification of graphene has become essential. In particular, covalent modification offers key benefits, including controllability, stability, and the facility to be integrated into manufacturing operations. In this Review, we critically comment on the latest advances in the covalent modification of supported graphene on substrates. We analyze the different chemical modifications with special attention to radical reactions. In this context, we review the latest achievements in reactivity control, tailoring electronic properties, and introducing active functionalities. Finally, we extended our analysis to other emerging 2D materials supported on surfaces, such as transition metal dichalcogenides, transition metal oxides, and elemental analogs of graphene.

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Section: Introduction Of Single Atomssupporting

confidence: 92%

The Covalent Functionalization of Surface‐Supported Graphene: An Update

et al. 2022

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“…To perform detailed ex situ polarized micro-Raman analysis of the grown 2D silicon layer, it is necessary to protect it from oxidation, which otherwise occurs very rapidly under ambient conditions. 34 In our previous work, we have presented a method for passivating silicene layers by encapsulating them by few-layer graphene (FLG) flakes. 19 The passivation, performed directly in UHV, is based on the mechanical exfoliation of graphite on top of the freshly grown silicene layer.…”

Section: Resultsmentioning

confidence: 99%

Highly Biaxially Strained Silicene on Au(111)

et al. 2021

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Many of graphene’s remarkable properties arise from its linear dispersion of the electronic states, forming a Dirac cone at the K points of the Brillouin zone. Silicene, the 2D allotrope of silicon, is also predicted to show a similar electronic band structure, with the addition of a tunable bandgap, induced by spin–orbit coupling. Because of these outstanding electronic properties, silicene is considered as a promising building block for next-generation electronic devices. Recently, it has been shown that silicene grown on Au(111) still possesses a Dirac cone, despite the interaction with the substrate. Here, to fully characterize the structure of this 2D material, we investigate the vibrational spectrum of a monolayer silicene grown on Au(111) by polarized Raman spectroscopy. To enable a detailed ex situ investigation, we passivated the silicene on Au(111) by encapsulating it under few layers hBN or graphene flakes. The observed spectrum is characterized by vibrational modes that are strongly red-shifted with respect to the ones expected for freestanding silicene. By comparing low-energy electron diffraction (LEED) patterns and Raman results with first-principles calculations, we show that the vibrational modes indicate a highly (>7%) biaxially strained silicene phase.

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“…Articles actively used in the preparation of this review article are cited in the reference section. 3,4,13–21,23–28,30–137 The data was selected in a time-blind manner, i.e. dependent only on the suitability of the data without prioritizing the year the data was published.…”

Section: Literature Review and Database Structurementioning

confidence: 99%