Strain-mediated type-I/type-II transition in MXene/Blue phosphorene van der Waals heterostructures for flexible optical/electronic devices

2017 ◽  
Vol 5 (4) ◽  
pp. 978-984 ◽  
Author(s):  
Zhonglu Guo ◽  
Naihua Miao ◽  
Jian Zhou ◽  
Baisheng Sa ◽  
Zhimei Sun
Keyword(s):  
2D Materials ◽  
Van Der Waals ◽  
Electronic Devices ◽  
Type I ◽  
Type Ii ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Blue Phosphorene

Development of novel van der Waals (vdW) heterostructures from various two-dimensional (2D) materials shows unprecedented possibilities by combining the advantageous properties of their building layers.

Electronic structures and enhanced photocatalytic properties of blue phosphorene/BSe van der Waals heterostructures

2018 ◽  
Vol 6 (19) ◽  
pp. 8923-8929 ◽  
Author(s):  
Bao-Ji Wang ◽  
Xiao-Hua Li ◽  
Ruiqi Zhao ◽  
Xiao-Lin Cai ◽  
Wei-Yang Yu ◽  
...  
Keyword(s):  
Electronic Structures ◽  
2D Materials ◽  
Van Der Waals ◽  
Photocatalytic Properties ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Blue Phosphorene

Constructing van der Waals heterostructures can enhance two-dimensional (2D) materials with desired properties and greatly extend the applications of the original materials.

scholarly journals PN/PAs-WSe2 van der Waals heterostructures for solar cell and photodetector

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Xinyi Zheng ◽  
Yadong Wei ◽  
Kaijuan Pang ◽  
Ngeywo Kaner Tolbert ◽  
Dalin Kong ◽  
...  
Keyword(s):  
Refractive Index ◽  
Solar Cells ◽  
Negative Refractive Index ◽  
Wide Spectrum ◽  
Van Der Waals ◽  
Band Alignment ◽  
Ultraviolet Region ◽  
Type I ◽  
Type Ii ◽  
Van Der Waals Heterostructures

Abstract By first-principles calculations, we investigate the geometric stability, electronic and optical properties of the type-II PN-WSe2 and type-I PAs-WSe2 van der Waals heterostructures(vdWH). They are p-type semiconductors with indirect band gaps of 1.09 eV and 1.08 eV based on PBE functional respectively. By applying the external gate field, the PAs-WSe2 heterostructure would transform to the type-II band alignment from the type-I. With the increasing of magnitude of the electric field, two heterostructures turn into the n-type semiconductors and eventually into metal. Especially, PN/PAs-WSe2 vdWH are both high refractive index materials at low frequencies and show negative refractive index at high frequencies. Because of the steady absorption in ultraviolet region, the PAs-WSe2 heterostructure is a highly sensitive UV detector material with wide spectrum. The type-II PN-WSe2 heterostructure possesses giant and broadband absorption in the near-infrared and visible regions, and its solar power conversion efficiency of 13.8% is higher than the reported GaTe–InSe (9.1%), MoS2/p-Si (5.23%) and organic solar cells (11.7%). It does project PN-WSe2 heterostructure a potential for application in excitons-based solar cells.

Prediction of spin–orbital coupling effects on the electronic structure of two dimensional van der Waals heterostructures

2015 ◽  
Vol 17 (46) ◽  
pp. 31253-31259 ◽  
Author(s):  
Baiqing You ◽  
Xiaocha Wang ◽  
Wenbo Mi
Keyword(s):  
Electronic Structure ◽  
First Principles ◽  
2D Materials ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Coupling Effects ◽  
Van Der Waals Heterostructures ◽  
Spin Orbital ◽  
First Principles Study ◽  
Spin Orbital Coupling

We report a first-principles study on the electronic structure of van der Waals (vdW) heterostructures consisting of two dimensional (2D) materials.

scholarly journals Exotic Physical Properties of 2D Materials Modulated by Moiré Superlattices

2021 ◽  
Author(s):  
Beibei Shi ◽  
Pengfei Qi ◽  
Meiling Jiang ◽  
Yuchen Dai ◽  
Feng Lin ◽  
...  
Keyword(s):  
Physical Properties ◽  
2D Materials ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Moire Pattern ◽  
Moiré Pattern ◽  
Two Dimensional Materials ◽  
Quantum Phenomena

Van der Waals heterostructures of two-dimensional materials are naturally endowed with the nanoscale moiré pattern, which has become a versatile platform for studying novel quantum phenomena during past decades. Here,...

Two-dimensional layered Type-II MS2/BiOCl (M = Zr, Hf) van der Waals heterostructures: A promising photocatalysts for hydrogen generation

2021 ◽  
Author(s):  
Francis Opoku ◽  
Osei Akoto ◽  
Samuel Osei-Bonsu Oppong ◽  
Anthony Apeke Adimado
Keyword(s):  
Energy Storage ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Van Der Waals ◽  
H2 Production ◽  
Type Ii ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Photocatalytic Water Splitting ◽  
Van Der Waals Heterostructure

Sustainable hydrogen (H2) production via photocatalytic water splitting is considered the most promising energy storage, where two-dimensional van der Waals heterostructure, composed of two or more 2D monolayer materials, has...

Strain and electric field modulated electronic structure of two-dimensional SiP(SiAs)/GeS van der Waals heterostructures

2019 ◽  
Vol 7 (34) ◽  
pp. 10491-10497 ◽  
Author(s):  
Yingmei Zhu ◽  
Xiaocha Wang ◽  
Wenbo Mi
Keyword(s):  
Electronic Structure ◽  
Electric Field ◽  
Van Der Waals ◽  
Type Ii ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
P Type

Type-II alignment appears in the SiP(SiAs)/GeS heterostructures, which can be tuned by strain and an electric field.

scholarly journals Recent progress in the assembly of nanodevices and van der Waals heterostructures by deterministic placement of 2D materials

2018 ◽  
Vol 47 (1) ◽  
pp. 53-68 ◽  
Author(s):  
Riccardo Frisenda ◽  
Efrén Navarro-Moratalla ◽  
Patricia Gant ◽  
David Pérez De Lara ◽  
Pablo Jarillo-Herrero ◽  
...  
Keyword(s):  
Recent Progress ◽  
2D Materials ◽  
Van Der Waals ◽  
Layer By Layer ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Two Dimensional Materials

Designer heterostructures can be assembled layer-by-layer with unmatched precision thanks to the recently developed deterministic placement methods to transfer two-dimensional materials.

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