The study of electronic structure and properties of silicene for gas sensor application

Wella, Sasfan Arman; Syaputra, Marhamni; Wungu, Triati Dewi Kencana; Suprijadi,

doi:10.1063/1.4943734

Cited by 13 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even simple common gas molecules can adsorb on Xenes with substantially different adsorption energies, as illustrated in figure 11(a). While some molecules, such as O 2 , NH 3 , NO, NO 2 and SO 2 , are chemisorbed on Xenes, the other, including H 2 O, CO and CO 2 are physisorbed [171,173,[175][176][177][178][179][180][181][182][183]. Among other Xenes, silicene is known to be oxidized the most easily, which is reflected in the highest adsorpition energy.…”

Section: Adsorption Of Moleculesmentioning

confidence: 99%

Functionalization of group-14 two-dimensional materials

Krawiec

2018

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The great success of graphene has boosted intensive search for other single-layer thick materials, mainly composed of group-14 atoms arranged in a honeycomb lattice. This new class of two-dimensional (2D) crystals, known as 2D-Xenes, has become an emerging field of intensive research due to their remarkable electronic properties and the promise for a future generation of nanoelectronics. In contrast to graphene, Xenes are not completely planar, and feature a low buckled geometry with two sublattices displaced vertically as a result of the interplay between sp and sp orbital hybridization. In spite of the buckling, the outstanding electronic properties of graphene governed by Dirac physics are preserved in Xenes too. The buckled structure also has several advantages over graphene. Together with the spin-orbit (SO) interaction it may lead to the emergence of various experimentally accessible topological phases, like the quantum spin Hall effect. This in turn would lead to designing and building new electronic and spintronic devices, like topological field effect transistors. In this regard an important issue concerns the electron energy gap, which for Xenes naturally exists owing to the buckling and SO interaction. The electronic properties, including the magnitude of the energy gap, can further be tuned and controlled by external means. Xenes can easily be functionalized by substrate, chemical adsorption, defects, charge doping, external electric field, periodic potential, in-plane uniaxial and biaxial stress, and out-of-plane long-range structural deformation, to name a few. This topical review explores structural, electronic and magnetic properties of Xenes and addresses the question of their functionalization in various ways, including external factors acting simultaneously. It also points to future directions to be explored in functionalization of Xenes. The results of experimental and theoretical studies obtained so far have many promising features making the 2D-Xene materials important players in the field of future nanoelectronics and spintronics.

show abstract

Section: Adsorption Of Moleculesmentioning

confidence: 99%

Functionalization of group-14 two-dimensional materials

Krawiec

2018

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…Researchers have found that the electron mobility of silicene is 2.57 x 10^5 cm 2 V -1 s -1 [7] which is greater than the electron mobility of bulk silicon i.e 0.014 x 10 ^5 cm 2 V -1 s -1 [8]. Sasfan et.al has investigated the electronic structure and transport properties of silicene for gas sensor applications [9]. Dongqing Zou et.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on Electronic Transport Behavior of Silicene and B40-Nano Onions

Kaur

Kumar

2022

Silicon

View full text Add to dashboard Cite

Density Functional Theory is utilized to scrutinize the electronic state of silicene and boron nano-onion which is a round compact mass formed by placing an N20, C20, and B20 fullerene within its parent atom fullerene B40. NEGF was used to investigate the quantum transport at both equilibrium and non-equilibrium. Firstly, the I-V curve for both silicene and boron-based devices was studied and compared. From the results, it is concluded that boron-based devices are better than silicene. To get deeper insights into why boron-based devices are better than silicene, transport properties of boron-based devices were determined. Later on, the transport mechanism is analyzed by computing the DOS, transmission and molecular spectra, HLG, electron densities, and differential conductance when the boron nanoonion is placed between the pair of Au electrodes. The calculated results are evaluated and a comparative study is done. From the results, it is deduced that the N20 variant nano-onion has lesser HOMO-LUMO gap (HLG) and highest value of current in comparison to other devices. Thus, by infusing a smaller fullerene of N20 inside the hollow cage of B40 fullerene the amplification of current and conductance can be observed in Boron-nano-onion in comparison to other devices.

show abstract

“…All three materials have the same honeycomb hexagonal structure, but they are formed from different elements and have characteristic properties. Silicene is a two-dimensional structure, it is formed from silicon atoms, and its buckling height is about 0.43Å [4]. There have been many studies on silicene, the structural and electromagnetic properties of silicene have shown that silicene has the same electronic structure as graphene, but silicene has the ability to modulate the bandgap better than graphene and germanene, the substrate from which silicene is produced has a significant influence on its electronic properties [5].…”

Section: Introductionmentioning

confidence: 99%

Study of doping a thallium atom in silicene nanoribbons in an electrical field

Ngoc

2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Silicene is a two-dimensional material made up of silicon atoms, the silicene nanoribbons (SNRs) studied here are made of silicene with edges modified by hydrogen atoms. The work doped a thallium atom into the unit cell of SNRs, the electric field acting on the system has a constant magnitude: 0.15V/Å. There are two doped structures studied, top structure and valley structure. Density functional theory (DFT) is used in this study, the bands of energy and states of the configurations will be plotted, investigated, and analysed. The partial states (s, p) will be studied.

show abstract

The study of electronic structure and properties of silicene for gas sensor application

Cited by 13 publications

References 14 publications

Functionalization of group-14 two-dimensional materials

Functionalization of group-14 two-dimensional materials

A Comparative Study on Electronic Transport Behavior of Silicene and B40-Nano Onions

Study of doping a thallium atom in silicene nanoribbons in an electrical field

Contact Info

Product

Resources

About