Robust staggered band alignment in one-dimensional van der Waals heterostructures: binary compound nanoribbons in nanotubes

2019 ◽  
Vol 7 (13) ◽  
pp. 3829-3836 ◽  
Author(s):  
Ming Gong ◽  
Guang-Ping Zhang ◽  
Hui Hui Hu ◽  
Liangzhi Kou ◽  
Kun Peng Dou ◽  
...  
Keyword(s):  
Water Splitting ◽  
Light Harvesting ◽  
Van Der Waals ◽  
Binary Compound ◽  
Band Alignment ◽  
Van Der Waals Heterostructures ◽  
One Dimensional

The robust staggered band alignment in one-dimensional van der Waals heterostructures is favorable for enhancing light harvesting and water splitting.

scholarly journals Type-I band alignment of BX–ZnO (X = As, P) van der Waals heterostructures as high-efficiency water splitting photocatalysts: a first-principles study

RSC Advances ◽  
2020 ◽  
Vol 10 (72) ◽  
pp. 44545-44550
Author(s):  
Thi-Nga Do ◽  
M. Idrees ◽  
Nguyen T. T. Binh ◽  
Huynh V. Phuc ◽  
Nguyen N. Hieu ◽  
...  
Keyword(s):  
Water Splitting ◽  
First Principles ◽  
High Efficiency ◽  
Van Der Waals ◽  
Band Alignment ◽  
Photocatalytic Properties ◽  
Type I ◽  
First Principles Calculations ◽  
Van Der Waals Heterostructures ◽  
First Principles Study

In this work, we perform first-principles calculations to examine the electronic, optical and photocatalytic properties of the BX–ZnO (X = As, P) heterostructures.

scholarly journals Electrical control of excitons in van der Waals heterostructures with type-II band alignment

2018 ◽  
Vol 98 (12) ◽  
Author(s):  
A. Chaves ◽  
J. G. Azadani ◽  
V. Ongun Özçelik ◽  
R. Grassi ◽  
T. Low
Keyword(s):  
Van Der Waals ◽  
Band Alignment ◽  
Type Ii ◽  
Van Der Waals Heterostructures ◽  
Electrical Control

2D van der Waals heterostructures of graphitic BCN as direct Z-scheme photocatalysts for overall water splitting: the role of polar π-conjugated moieties

2020 ◽  
Vol 22 (41) ◽  
pp. 23735-23742
Author(s):  
Zhijie Wang ◽  
Zhibo Luo ◽  
Jia Li ◽  
Kang Yang ◽  
Gang Zhou
Keyword(s):  
Water Splitting ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Overall Water Splitting ◽  
Π Stacking

A principle diagram of BC3/C3N and BC3/BC6N heterostructures immobilized by π–π stacking as direct Z-scheme photocatalysts for water splitting.

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.

Two-dimensional BP/β-AsP van der Waals heterostructures as promising photocatalyst for water splitting

2020 ◽  
Vol 117 (6) ◽  
pp. 063901 ◽  
Author(s):  
Yu-Liang Liu ◽  
Ying Shi ◽  
Hang Yin ◽  
Chuan-Lu Yang
Keyword(s):  
Water Splitting ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures

Vertical strain and electric field tunable band alignment in type-II ZnO/MoSSe van der Waals heterostructures

2021 ◽  
Author(s):  
Pan Wang ◽  
Yixin Zong ◽  
Hao Liu ◽  
Hongyu Wen ◽  
Yueyang Liu ◽  
...  
Keyword(s):  
Electric Field ◽  
Van Der Waals ◽  
Band Alignment ◽  
Type Ii ◽  
Van Der Waals Heterostructures ◽  
Vertical Strain

The band alignment of type-II ZnO/MoSSe vdWH can be tuned to types I and III by strain and the electric field.

Ferroelectricity in 2D metal phosphorous trichalcogenides and van der Waals heterostructures for photocatalytic water splitting

2020 ◽  
Author(s):  
Sheng Huang ◽  
Zhigang Shuai ◽  
Dong Wang
Keyword(s):  
Water Splitting ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Photocatalytic Water Splitting

Integration of ferroelectricity into van der Waals heterostructures offers additional opportunities to control over the properties and functionalities of heterostructures by switching the direction of the polarization via an external...

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