Recent progress in 2D group-V elemental monolayers: fabrications and properties

Abstract

A large number of two-dimensional (2D) monoelemental materials with huge application potentials have been developed, since graphene was reported as a monoelemental material with unique properties. As cousins of graphene, 2D group-V elemental monolayers have gained tremendous interest due to their electronic properties with significant fundamental bandgap. In this review, we extensively summarize the latest theoretical and experimental progress in group-V monoelemental materials, including the latest fabrication methods, the properties and potential applications of these 2D monoelementals. We also give a perspective of the challenges and opportunities of 2D monoelemental group-V monolayer materials and related functional nanodevices.

Bonding, structure, and mechanical stability of 2D materials: the predictive power of the periodic table

“…A recent review describes in detail the progress made with top-down methods (mechanical, liquid, and electrochemical exfoliation) and bottom-up methods (CVD, MBE) in the fabrication of group V monolayers. 211 The quick oxidative degradation of reactive phosphorene, induced by oxygen dissolved in adsorbed water and light exposure, requires effective passivation schemes for synthesis, characterization, and processing. 212 Exfoliation of layered bulk grey arsenic, existing in nature, allows the isolation of buckled arsenene monolayers.…”

Exploring a silicene monolayer as a promising sensor platform to detect and capture NO and CO gas

“…2b, one can see that the p z state shows a major contribution to the band structure formation around the Fermi level, while the lower part of the valence band and upper part of the conduction band are built mainly by the p x -p y and s states, respectively. Covalent bonds are characteristic of monoelemental monolayers, 34,36 which are formed by shared electrons. In the case of silicene, a large charge accumulation in the bridge region between constituent Si atoms also demonstrates the predominance of the covalent bonds (see the charge density difference illustrated in Fig.…”

Controllable Preparation of 2D Vertical van der Waals Heterostructures and Superlattices for Functional Applications

“…C/PVD methods are undoubtedly powerful platforms for the construction of most vdWHs; however, they are unsuitable for growing various single 2D materials, such as the elemental analogs of graphene (silicene, germanene, stanene, antimonene, etc. [ 39 ] ). UHV growth techniques, including molecular beam epitaxy (MBE), surface epitaxy, and magnetron sputtering, can compensate for this limitation.…”