Effects of dopants on the adhesion and electronic structure of a SnO2/Cu interface: a first-principles study

2018 ◽  
Vol 20 (23) ◽  
pp. 15618-15625 ◽  
Author(s):  
Wei-Jian Li ◽  
Wen-Zhu Shao ◽  
Qing Chen ◽  
Lu Zhang ◽  
Yu Han ◽  
...  
Keyword(s):  
Electronic Structure ◽  
First Principles ◽  
First Principles Calculations ◽  
Interface Adhesion ◽  
Covalent Bonds ◽  
First Principles Study

Using first-principles calculations, low-valence doping was found to enhance the interface adhesion of SnO2/Cu and was attributed to the formation of covalent bonds.

Electronic and magnetic properties of the Janus MoSSe/WSSe superlattice nanoribbon: a first-principles study

2020 ◽  
Vol 22 (4) ◽  
pp. 2498-2508 ◽  
Author(s):  
Lingling Yu ◽  
Shoutian Sun ◽  
Xiang Ye
Keyword(s):  
Magnetic Properties ◽  
Electronic Structure ◽  
First Principles ◽  
Period Length ◽  
First Principles Calculations ◽  
Ribbon Width ◽  
Electronic And Magnetic Properties ◽  
First Principles Study ◽  
Structure Properties

The electronic structure properties of Janus MoSSe/WSSe superlattice nanoribbons (SLNRs) are investigated by first-principles calculations. The ribbon width, combination ratio and period length have a great effect on the properties of the SLNRs.

scholarly journals First-principles study on the effects of N and Al doping on the mechanical properties and electronic structures of TiC

RSC Advances ◽  
2020 ◽  
Vol 10 (60) ◽  
pp. 36295-36302
Author(s):  
Zhinan Cao ◽  
Na Jin ◽  
Jinwen Ye ◽  
Xu Du ◽  
Ying Liu
Keyword(s):  
Mechanical Properties ◽  
Electronic Structure ◽  
Plane Wave ◽  
First Principles ◽  
Electronic Structures ◽  
First Principles Calculations ◽  
Al Doping ◽  
First Principles Study

First-principles calculations are carried out by DFT within the CASTEP plane wave code to investigate the mechanical properties and electronic structure of N and Al doped TiC.

scholarly journals Adsorption sensitivity of graphane decorated with B, N, S, and Al towards HCN: a first-principles study

RSC Advances ◽  
2017 ◽  
Vol 7 (69) ◽  
pp. 43521-43530 ◽  
Author(s):  
Qingxiao Zhou ◽  
Weiwei Ju ◽  
Xiangying Su ◽  
Yongliang Yong ◽  
Xiaohong Li ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Electronic Structure ◽  
Adsorption Energy ◽  
Geometric Structure ◽  
First Principles ◽  
First Principles Calculations ◽  
First Principles Study ◽  
Hydrogenated Graphene

The geometric structure, adsorption energy, electronic structure, and magnetic properties of hydrogenated graphene (graphane) with the adsorption of a HCN molecule were investigated by first-principles calculations.

First-principles study of Ga-vacancy induced magnetism in β-Ga2O3

2017 ◽  
Vol 19 (42) ◽  
pp. 28928-28935 ◽  
Author(s):  
Ya Yang ◽  
Jihua Zhang ◽  
Shunbo Hu ◽  
Yabei Wu ◽  
Jincang Zhang ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Magnetic Properties ◽  
Electronic Structure ◽  
First Principles ◽  
Density Functional ◽  
First Principles Calculations ◽  
Functional Theory ◽  
Cation Vacancies ◽  
First Principles Study

First principles calculations based on density functional theory were performed to study the electronic structure and magnetic properties of β-Ga2O3 in the presence of cation vacancies.

Elastic properties and electronic structure of Mo2FeB2 alloyed with Cr, Ni and Mn by first-principles calculations

2017 ◽  
Vol 31 (12) ◽  
pp. 1750138 ◽  
Author(s):  
Yuan Hua Lin ◽  
Chuang Chuang Tong ◽  
Yong Pan ◽  
Wan Ying Liu ◽  
Ambrish Singh
Keyword(s):  
Electronic Structure ◽  
Elastic Modulus ◽  
Elastic Properties ◽  
First Principles ◽  
Deformation Resistance ◽  
Alloying Elements ◽  
First Principles Calculations ◽  
Volume Deformation ◽  
Covalent Bonds ◽  
G Ratio

In this work, we have applied the first-principles calculations to investigate the structural stability, elastic properties and electronic structure of Mo2FeB2 with alloying elements Cr, Ni and Mn. The calculated cohesive energy shows that Cr, Ni and Mn prefer to occupy the Fe atom of Mo2FeB2. However, only when Mn is doped at the Mo atom of Mo2FeB2, it is converted from dynamic unstable state to stable state. The calculated elastic modulus shows that Mo2FeB2 will have better mechanical properties when alloying elements are at Fe site instead of Mo site. Moreover, Cr addition can improve the volume deformation resistance of Mo2FeB2, Mn addition can improve the shear deformation resistance for Mo2FeB2. The calculated B/G ratio shows that Ni addition can improve the brittleness of borides. Furthermore, the hardness of Mo2FeB2 can be enhanced by adding Cr and Mn element. The calculated electronic structure indicates that the increasing of elastic modulus is attributed to the formation of Cr–B and Mn–B covalent bonds.

First-Principles study of HfO2/:GaAs interface passivation by Si and Ge

2009 ◽  
Vol 1155 ◽  
Author(s):  
Weichao Wang ◽  
Ka Xiong ◽  
Geunsik Lee ◽  
Min Huang ◽  
Robery M. Wallace ◽  
...  
Keyword(s):  
Electronic Structure ◽  
First Principles ◽  
Interface States ◽  
Electron Loss ◽  
First Principles Calculations ◽  
Passivating Layer ◽  
First Principles Study ◽  
Interface Passivation ◽  
Interfacial Charge

AbstractWe investigated the HfO2:GaAs interface electronic structure and interface passivation by first principles calculations. The HfO2:GaAs interface of HfO2 terminated with four O atoms and GaAs terminated two Ga atoms is found to be the most energetically favorable. It is found that the interface states mainly arise from the interfacial charge mismatch, more specifically from the electron loss of interfacial As. Si or Ge as an interfacial passivating layer helps to maintain the charge of interfacial As and hence reduce the interface states.

The pressure dependence of physical properties of (W2/3Ti1/3)3AlC2 and its counterpart W3AlC2 by first-principles calculations

2017 ◽  
Vol 31 (34) ◽  
pp. 1750326 ◽  
Author(s):  
Yefei Li ◽  
Liang Sun ◽  
Jiandong Xing ◽  
Shengqiang Ma ◽  
Qiaoling Zheng ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrostatic Pressure ◽  
First Principles ◽  
Density Functional ◽  
Elastic Anisotropy ◽  
Debye Model ◽  
Mechanical Anisotropy ◽  
Max Phase ◽  
First Principles Calculations ◽  
Covalent Bonds

First-principles calculations based on density functional theory (DFT) were used to investigate the mechanical properties, elastic anisotropy, electronic structure, optical properties and thermodynamic properties of a new quaternary MAX phase (W[Formula: see text]Ti[Formula: see text])[Formula: see text]AlC[Formula: see text] and its counterpart W[Formula: see text]AlC[Formula: see text] under hydrostatic pressure. The results indicate that the volumetric shrinkage of (W[Formula: see text]Ti[Formula: see text])[Formula: see text]AlC[Formula: see text] is faster than that of axial shrinkage under hydrostatic pressure. The stress–strain method and Voigt–Reuss–Hill approximation were used to calculate elastic constants and moduli, respectively. These compounds are mechanically stable under hydrostatic pressure. Moreover, the moduli of (W[Formula: see text]Ti[Formula: see text])[Formula: see text]AlC[Formula: see text] and W[Formula: see text]AlC[Formula: see text] increase with an increase in pressure. The anisotropic indexes and surface constructions of bulk and Young’s moduli were used to illustrate the mechanical anisotropy under hydrostatic pressure. Electronic structure and optical property of (W[Formula: see text]Ti[Formula: see text])[Formula: see text]AlC[Formula: see text] and W[Formula: see text]AlC[Formula: see text] have also been discussed. The results of Debye temperature reveal that the covalent bonds among atoms in (W[Formula: see text]Ti[Formula: see text])[Formula: see text]AlC[Formula: see text] may be stronger than that of W3AlC[Formula: see text]. The heat capacity, [Formula: see text]–[Formula: see text], and thermal expansion coefficient of (W[Formula: see text]Ti[Formula: see text])[Formula: see text]AlC[Formula: see text] and W[Formula: see text]AlC[Formula: see text] were discussed in the ranges of 0–30 GPa and 0–2000 K using quasi-harmonic Debye model considering the phonon effects.

scholarly journals Electronic structure, optoelectronic properties and enhanced photocatalytic response of GaN–GeC van der Waals heterostructures: a first principles study

RSC Advances ◽  
2020 ◽  
Vol 10 (40) ◽  
pp. 24127-24133 ◽  
Author(s):  
Pham T. Huong ◽  
M. Idrees ◽  
B. Amin ◽  
Nguyen N. Hieu ◽  
Huynh V. Phuc ◽  
...  
Keyword(s):  
Electronic Structure ◽  
First Principles ◽  
Van Der Waals ◽  
Single Layer ◽  
Optoelectronic Properties ◽  
Optical Characteristics ◽  
First Principles Calculations ◽  
Van Der Waals Heterostructures ◽  
First Principles Study ◽  
Vdw Heterostructure

In this work, we systematically studied the electronic structure and optical characteristics of van der Waals (vdW) heterostructure composed of a single layer of GaN and GeC using first principles calculations.

The electronic structure, mechanical flexibility and carrier mobility of black arsenic–phosphorus monolayers: a first principles study

2016 ◽  
Vol 18 (14) ◽  
pp. 9779-9787 ◽  
Author(s):  
Jie Sun ◽  
Na Lin ◽  
Hao Ren ◽  
Cheng Tang ◽  
Letao Yang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Transport Properties ◽  
First Principles ◽  
Carrier Mobility ◽  
First Principles Calculations ◽  
Layered Semiconductors ◽  
First Principles Study

First principles calculations are performed to systematically study the structure, mechanical, electrical, and transport properties of the new artificial layered semiconductors-black arsenic–phosphorus (b-AsP).

Electronic Structure and X-ray Absorption Spectra of Rutile TiO2 Using First-Principles Calculations

2014 ◽  
Vol 52 (12) ◽  
pp. 1025-1029
Author(s):  
Min-Wook Oh ◽  
Tae-Gu Kang ◽  
Byungki Ryu ◽  
Ji Eun Lee ◽  
Sung-Jae Joo ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Absorption Spectra ◽  
First Principles ◽  
First Principles Calculations ◽  
Rutile Tio2 ◽  
X Ray ◽  
X Ray Absorption
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