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CVD of flat monolayer of 2D atomics honeycomb structure and their applications
Published in Kwang Leong Choy, Chemical Vapour Deposition (CVD), 2019
Manoj Kumar Singh, Dhananjay K. Sharma, Gonzalo Otero-Irurueta, María J. Hortigüela
In 2004, the graphene success diverted the interest of researchers to thinking more about single-atom-thick sheets (two-dimensional materials) from crystalline solids. Due to the fact that 2D materials have fundamentally different electronic structure and properties from their parent materials [104], now the time has come to play the structural and electronic properties of the materials. Researchers started innovating some new materials, leading them to ponder the other 2D crystalline structures like Germanene, Silicene, etc. Germanene (Figure 4.15) is the name given to the material which is made up of a single layer (monolayer, ML) of germanium with honeycomb-like structure. In the following section, we will be discussing more about the Germanene, its structural and electronic properties, followed by growth mechanisms on different substrates using different techniques.
CVD of flat monolayer of 2D atomics honeycomb structure and their applications
Published in Kwang Leong Choy, Chemical Vapour Deposition (CVD), 2019
Manoj Kumar Singh, Dhananjay K. Sharma, Gonzalo Otero-Irurueta, María J. Hortigüela
In 2004, the graphene success diverted the interest of researchers to thinking more about single-atom-thick sheets (two-dimensional materials) from crystalline solids. Due to the fact that 2D materials have fundamentally different electronic structure and properties from their parent materials [104], now the time has come to play the structural and electronic properties of the materials. Researchers started innovating some new materials, leading them to ponder the other 2D crystalline structures like Germanene, Silicene, etc. Germanene (Figure 4.15) is the name given to the material which is made up of a single layer (monolayer, ML) of germanium with honeycomb-like structure. In the following section, we will be discussing more about the Germanene, its structural and electronic properties, followed by growth mechanisms on different substrates using different techniques.
Novel cubic silicane nanosheet as an adsorbing medium for dimethylbutane and methylhexane molecules – a first-principles study
Published in Molecular Physics, 2023
M. S. Jyothi, V. Nagarajan, R. Chandiramouli
There exist several two-dimensional nanosheets (2D) such as graphene, germanene, silicene, stanene [5–11], which find potential importance in chemical sensors. D. Zhang group widely studied the gas/vapour sensing properties of various 2D materials such as MoS2-WS2 heterostructures, Au-Doped ZnO nanorods, metal-doped MoS2, Au-decorated MoSe2 and Au-SnSe2 Schottky junction. The results reveal that 2D materials are highly sensitive to various gas/vapours [12–16]. One of the astonishing properties of these 2D materials is their tunable bandgap. The bandgap tuning of the base material could be achieved by doping, functionalization, physical and chemical treatments [17]. This property opens up a wide range of applications in chemistry, physics, and biology. The mesmerising features of graphene and its utilisation in several applications have been established already. However, one of the vital trace elements for the human body and the second-most plentiful element on the earth after oxygen is silicon and its 2D form has also emerged to cater several applications.
Effect of Al doping on the electronic structure and optical properties of germanene
Published in Molecular Physics, 2022
Jianlin He, Guili Liu, Lin Wei, Xinyue Li
The discovery of monolayer graphene in 2004 [1] has stimulated the scientific community to study and analyze other two-dimensional monolayer atomic crystal structures. Many two-dimensional materials, such as silicene, germanene, arsenene, and black phosphorene [2–7], these two-dimensional (2D) materials have a wide range of applications in optoelectronic devices, solar cells, renewable energy, data storage, and other fields [8–12]. Graphene is a 2D material with typical quasi-metallic properties, but the absence of a semiconductor energy gap limits its development in the field of optoelectronics [13]. The existing market for semiconductor devices is dominated by silicon and germanium, and both silicene and germanene have been continuously explored both theoretically and experimentally. Therefore, how to open the bandgap by an effective method has also become a hot topic of current research.
Estimating thermal properties of plumbene by multiscale modeling using molecular dynamics simulation technique
Published in Mechanics of Advanced Materials and Structures, 2020
Dhiman Kumar Das, Ashis Mallick, Sachin Kumar Singh
One of the primary research concerns of material scientists is the need for developing advanced materials for future technological advancements. The research graphene, silicene, germanene, and plumbene, the low dimensional advanced materials have driven (a) perspective of applications in several fields, and (b) the fundamental scientific interest. Today it is possible to pull out single atomic layer from different bulk materials (i.e., formation of (2D) two-dimensional materials) adopting various operations, as a result of material science’s enormous progress. The two dimensional (2D) material properties are much better than the ancestor bulk materials. Graphene’s lead-based counterpart is plumbene. It has hexagonally organized atoms [1–4] are single-layered, honeycomb structure resembling graphene with Pb-Pb bond distance of 3 Å [2]. However, unlike graphene, plumbene resembles silicene having a little buckled structure, which increases its overlap between sigma (σ) and pi (π) orbitals. Type of hybridization in materials changes from sp2 to sp with increase in molecular weight [4]. Still, plumbene is a predicted material [5]. Its experimental synthesis is not reported until now.