scholarly journals Anisotropic optical properties induced by uniaxial strain of monolayer C3N: a first-principles study

RSC Advances ◽  
2019 ◽  
Vol 9 (23) ◽  
pp. 13133-13144 ◽  
Author(s):  
Qing-Yuan Chen ◽  
Ming-yang Liu ◽  
Chao Cao ◽  
Yao He
Keyword(s):  
Optical Properties ◽  
Electronic Properties ◽  
Structural Properties ◽  
First Principles ◽  
Uniaxial Strain ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
First Principles Study ◽  
Different Strains

The optical properties, structural properties and electronic properties of a new two-dimensional (2D) monolayer C3N under different strains are studied in this paper by using first-principles calculations.

scholarly journals A first principles study of the interaction between two-dimensional black phosphorus and Al2O3dielectric

RSC Advances ◽  
2017 ◽  
Vol 7 (23) ◽  
pp. 13777-13783 ◽  
Author(s):  
Jie Sun ◽  
Na Lin ◽  
Cheng Tang ◽  
Hao Ren ◽  
Xian Zhao
Keyword(s):  
Electronic Properties ◽  
First Principles ◽  
Black Phosphorus ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
First Principles Study

First principles calculations have been performed to study the structural, energetic, and electronic properties of BP on Al-terminated and hydroxylated Al2O3(0001) surfaces.

First-principles study of two-dimensional bilayer GaN: structure, electronic properties and temperature effect

2019 ◽  
Vol 58 (SC) ◽  
pp. SCCB35 ◽  
Author(s):  
Tomoe Yayama ◽  
Anh Khoa Augustin Lu ◽  
Tetsuya Morishita ◽  
Takeshi Nakanishi
Keyword(s):  
Temperature Effect ◽  
Electronic Properties ◽  
First Principles ◽  
Two Dimensional ◽  
First Principles Study

scholarly journals First-principles study on structural, electronic and optical properties of perovskite solid solutions KB1−xMgxI3 (B = Ge, Sn) toward water splitting photocatalysis

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 26432-26443
Author(s):  
Chol-Hyok Ri ◽  
Yun-Sim Kim ◽  
Un-Gi Jong ◽  
Yun-Hyok Kye ◽  
Se-Hun Ryang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Water Splitting ◽  
Potassium Iodide ◽  
Solid Solutions ◽  
First Principles ◽  
Lead Free ◽  
First Principles Calculations ◽  
Electronic And Optical Properties ◽  
First Principles Study

We propose lead-free potassium iodide perovskite solid solutions KBI3 with B-site mixing between Ge/Sn and Mg as potential candidates for photocatalysts based on systematic first-principles calculations.

scholarly journals First-Principles Study on the Stabilities, Electronic and Optical Properties of GexSn1-xSe Alloys

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 876 ◽  
Author(s):  
Qi Qian ◽  
Lei Peng ◽  
Yu Cui ◽  
Liping Sun ◽  
Jinyan Du ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Cells ◽  
Band Gap ◽  
Electronic Properties ◽  
First Principles ◽  
Future Application ◽  
First Principles Calculations ◽  
Electronic And Optical Properties ◽  
Direct Bandgap ◽  
The Future

We systematically study, by using first-principles calculations, stabilities, electronic properties, and optical properties of GexSn1-xSe alloy made of SnSe and GeSe monolayers with different Ge concentrations x = 0.0, 0.25, 0.5, 0.75, and 1.0. Our results show that the critical solubility temperature of the alloy is around 580 K. With the increase of Ge concentration, band gap of the alloy increases nonlinearly and ranges from 0.92 to 1.13 eV at the PBE level and 1.39 to 1.59 eV at the HSE06 level. When the Ge concentration x is more than 0.5, the alloy changes into a direct bandgap semiconductor; the band gap ranges from 1.06 to 1.13 eV at the PBE level and 1.50 to 1.59 eV at the HSE06 level, which falls within the range of the optimum band gap for solar cells. Further optical calculations verify that, through alloying, the optical properties can be improved by subtle controlling the compositions. Since GexSn1-xSe alloys with different compositions have been successfully fabricated in experiments, we hope these insights will contribute to the future application in optoelectronics.

Intriguing electronic structures and optical properties of two-dimensional van der Waals heterostructures of Zr2CT2 (T = O, F) with MoSe2 and WSe2

2018 ◽  
Vol 6 (11) ◽  
pp. 2830-2839 ◽  
Author(s):  
Gul Rehman ◽  
S. A. Khan ◽  
B. Amin ◽  
Iftikhar Ahmad ◽  
Li-Yong Gan ◽  
...  
Keyword(s):  
Optical Properties ◽  
Material Properties ◽  
First Principles ◽  
Electronic Structures ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Van Der Waals Heterostructures ◽  
Metal Dichalcogenides

Based on (hybrid) first-principles calculations, material properties (structural, electronic, vibrational, optical, and photocatalytic) of van der Waals heterostructures and their corresponding monolayers (transition metal dichalcogenides and MXenes) are investigated.

Strain engineering and electric field tunable of the electronic properties of two-dimensional ZnGeN2 monolayer

2021 ◽  
Author(s):  
Thi Nga Do ◽  
Son-Tung Nguyen ◽  
Khang Pham
Keyword(s):  
Electric Field ◽  
Electronic Properties ◽  
First Principles ◽  
Strain Engineering ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Structural And Electronic Properties

In this work, by means of the first-principles calculations, we investigate the structural and electronic properties of a two-dimensional ZnGeN2 monolayer as well as the effects of strains and electric...

scholarly journals Polarization effects on the interfacial conductivity in LaAlO3/SrTiO3heterostructures: a first-principles study

2016 ◽  
Vol 18 (9) ◽  
pp. 6831-6838 ◽  
Author(s):  
Maziar Behtash ◽  
Safdar Nazir ◽  
Yaqin Wang ◽  
Kesong Yang
Keyword(s):  
First Principles ◽  
Carrier Density ◽  
Uniaxial Strain ◽  
First Principles Calculations ◽  
Electron Carrier ◽  
Polarization Effects ◽  
First Principles Study

First-principles calculations predict the normalized electron carrier density (μ/μ0), the mobility (m*/m0), and the conductivity (σ/σ0) in LaAlO3/SrTiO3as a function of uniaxial strain.

First-principles study of Ce-doped Y3Al5O12 with Si–N incorporation: electronic structures and optical properties

2016 ◽  
Vol 4 (23) ◽  
pp. 5214-5221 ◽  
Author(s):  
Lixin Ning ◽  
Xiaowen Ji ◽  
Yuanyuan Dong ◽  
Wei Jin ◽  
Yucheng Huang ◽  
...  
Keyword(s):  
Optical Properties ◽  
First Principles ◽  
Electronic Structures ◽  
First Principles Calculations ◽  
First Principles Study ◽  
N Incorporation

Effects of Si–N incorporation on electronic structures and optical properties of YAG:Ce were investigated by first-principles calculations.

First-principles studies on electronic structures and optical properties of two-dimensional Sn1−xTi(Zr)xS2 alloys

2018 ◽  
Vol 32 (07) ◽  
pp. 1850092 ◽  
Author(s):  
Dandan Li ◽  
Juan Du ◽  
Qian Zhang ◽  
Congxin Xia ◽  
Shuyi Wei
Keyword(s):  
Optical Properties ◽  
Band Gap ◽  
First Principles ◽  
Electronic Structures ◽  
Threshold Energy ◽  
Ternary Alloys ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Experimental Conditions ◽  
Part Formula

Through first-principles calculations we study the electronic structures and optical properties of two-dimensional (2D) Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 alloys. The results indicate that the band gap value of Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 alloys is decreased continuously when Ti(Zr) concentration is increased, which is very beneficial to optoelectronic devices applications. Moreover, the static dielectric constant is increased when the Ti(Zr) concentration is increased in the 2D Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 alloys. In addition, we also calculate the imaginary part [Formula: see text] dispersion of Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 alloys along the plane with different Ti(Zr) concentrations. The threshold energy values decrease with increasing Ti(Zr) concentrations in the Sn[Formula: see text]Ti(Zr)[Formula: see text]S2 ternary alloys. Moreover, the calculations of formation energy also indicate that these 2D alloys can be fabricated under some experimental conditions. These results suggest that Ti(Zr) substituting Sn atom is an efficient way to tune the band gap and optical properties of 2D SnS2 nanosheets.

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