Tunable electronic and optical properties of new two-dimensional GaN/BAs van der Waals heterostructures with the potential for photovoltaic applications

2019 ◽  
Vol 728 ◽  
pp. 124-131 ◽  
Author(s):  
Ali A. Attia ◽  
Hamad Rahman Jappor
Keyword(s):  
Optical Properties ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Electronic And Optical Properties ◽  
Photovoltaic Applications

scholarly journals Manipulable Electronic and Optical Properties of Two-Dimensional MoSTe/MoGe2N4 van der Waals Heterostructures

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3338
Author(s):  
Jiali Wang ◽  
Xiuwen Zhao ◽  
Guichao Hu ◽  
Junfeng Ren ◽  
Xiaobo Yuan
Keyword(s):  
Optical Properties ◽  
Absorption Coefficient ◽  
High Performance ◽  
Density Functional ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Electronic And Optical Properties ◽  
Wide Range ◽  
Direct Band

van der Waals heterostructures (vdWHs) can exhibit novel physical properties and a wide range of applications compared with monolayer two-dimensional (2D) materials. In this work, we investigate the electronic and optical properties of MoSTe/MoGe2N4 vdWH under two different configurations using the VASP software package based on density functional theory. The results show that Te4-MoSTe/MoGe2N4 vdWH is a semimetal, while S4-MoSTe/MoGe2N4 vdWH is a direct band gap semiconductor. Compared with the two monolayers, the absorption coefficient of MoSTe/MoGe2N4 vdWH increases significantly. In addition, the electronic structure and the absorption coefficient can be manipulated by applying biaxial strains and changing interlayer distances. These studies show that MoSTe/MoGe2N4 vdWH is an excellent candidate for high-performance optoelectronic devices.

Band alignment and optical features in Janus-MoSeTe/X(OH)2 (X = Ca, Mg) van der Waals heterostructures

2019 ◽  
Vol 21 (46) ◽  
pp. 25849-25858 ◽  
Author(s):  
Dat D. Vo ◽  
Tuan V. Vu ◽  
Nguyen V. Hieu ◽  
Nguyen N. Hieu ◽  
Huynh V. Phuc ◽  
...  
Keyword(s):  
Optical Properties ◽  
Van Der Waals ◽  
Band Alignment ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Electronic And Optical Properties ◽  
Application Range ◽  
Two Dimensional Materials

van der Waals heterostructures can be effectively used to enhance the electronic and optical properties and extend the application range of two-dimensional materials.

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.

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