Ultrahigh-photoresponsive UV photodetector based on a BP/ReS2 heterostructure p–n diode

Nanoscale ◽  
2018 ◽  
Vol 10 (35) ◽  
pp. 16805-16811 ◽  
Author(s):  
Shiwei Cao ◽  
Yanhui Xing ◽  
Jun Han ◽  
Xin Luo ◽  
Wenxing Lv ◽  
...  
Keyword(s):  
Lattice Mismatch ◽  
Van Der Waals ◽  
Optoelectronic Properties ◽  
Van Der Waals Interactions ◽  
Two Dimensional ◽  
Interface Quality ◽  
Uv Photodetector ◽  
Mismatch Problem ◽  
Two Dimensional Materials ◽  
Vdw Heterostructure

The van der Waals (vdW) heterostructure, made up of two dissimilar two-dimensional materials held together by van der Waals interactions, has excellent electronic and optoelectronic properties as it provides a superior interface quality without the lattice mismatch problem.

scholarly journals Low-Powered Photodetector Based on Two-Dimensional InS0.3Se0.7/WS2 Heterostructure

2021 ◽  
Vol 13 (12) ◽  
pp. 6883
Author(s):  
Kaiting Zhang ◽  
Jie Chang ◽  
Chaoyang Tan ◽  
Hui Han
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Lattice Mismatch ◽  
Response Speed ◽  
Building Blocks ◽  
Two Dimensional ◽  
Photoelectric Properties ◽  
Two Dimensional Materials ◽  
Potential Applications ◽  
Vdw Heterostructure

Photodetectors based on two-dimensional (2D) materials have great potential applications in the field of new energy, such as fuel cells, solar cells, and other fields. Van der Waals (vdW) heterojunction photodiodes are expected to be one of the promising applications of two-dimensional materials due to the photoelectric properties without consideration of lattice mismatch. High-efficiency photoelectric sensors based on two-dimensional materials have great significance to reducing the energy consumption of devices. Here, we build a complex vdW heterostructure by combining InS0.3Se0.7 with another suitable 2D material WS2. Few-layer graphite was used as electrodes to enhance the optoelectronic performance of indium monochalcogenides. Evident photocurrent is observed in the InS0.3Se0.7/WS2 vdW heterostructure device arising from the formed p–n junction at the interface. The uniformity and photoresponse of the InS0.3Se0.7/WS2 vdW heterostructure has been further investigated by the photocurrent mapping. It shows that the entire photovoltaic current was originated from the InS0.3Se0.7/WS2 vdW heterojunction by scanning photocurrent microscope images. Furthermore, the response speed is enhanced at small bias voltage. The transient photoresponse can be well reproduced in almost 100 cycles, indicating the good repeatable optoelectronic performance. Our study indicates that the as-prepared InS0.3Se0.7/WS2 vdW heterostructures are attractive building blocks for photodetectors application. Our findings will open up a new way to further develop high-performance, low-power, and energy-efficient photodetectors based on indium monochalcogenides.

scholarly journals van der Waals Heterojunction Devices Based on Organohalide Perovskites and Two-Dimensional Materials

Nano Letters ◽  
2015 ◽  
Vol 16 (1) ◽  
pp. 367-373 ◽  
Author(s):  
Hung-Chieh Cheng ◽  
Gongming Wang ◽  
Dehui Li ◽  
Qiyuan He ◽  
Anxiang Yin ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Two Dimensional ◽  
Heterojunction Devices ◽  
Two Dimensional Materials

Two-dimensional C3N/blue phosphorene vdW heterostructure for Li, Na and K-ion batteries

2021 ◽  
Author(s):  
Mohammad Ubaid ◽  
Anver Aziz ◽  
Bhalchandra S. Pujari
Keyword(s):  
Van Der Waals ◽  
Potassium Ion ◽  
Two Dimensional ◽  
Van Der Waals Heterostructure ◽  
Vdw Heterostructure ◽  
Sodium And Potassium ◽  
Blue Phosphorene

We investigate a van der Waals heterostructure constructed using BP and C3N and investigate its use as an anode for lithium-, sodium- and potassium-ion batteries.

scholarly journals Two-dimensional nanoframes with dual rims

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Sungjae Yoo ◽  
Jeongwon Kim ◽  
Sungwoo Choi ◽  
Doojae Park ◽  
Sungho Park
Keyword(s):  
Van Der Waals ◽  
Selective Etching ◽  
Van Der Waals Interactions ◽  
Two Dimensional ◽  
Large Area ◽  
Lattice Constants ◽  
Size And Shape ◽  
Single Entity ◽  
Synthetic Strategy ◽  
High Degree

AbstractThe synthesis of highly complex two-dimensional (2D) metal nanoframes remains a great challenge. Synthetic strategies for preparing 2D metal nanoframes are few, and rational and systematic synthetic pathways to more complicated architectures have not yet been reported. Herein, we demonstrate a stepwise synthetic strategy for complex 2D metal nanoframes with a high degree of intricacy; the strategy leads to a variety of shapes, including rings, triangles, hexagons, and tripods with tailorable single or double frames in a single entity. These nanoframes of high homogeneity could be obtained through selective combination of four different chemical toolkits consisting of selective etching and deposition on certain facets, and concentric and/or eccentric regrowth by controlling the mismatches of lattice constants of metals. The resulting nanoframes were highly homogeneous in size and shape and had van der Waals interactions that maximized rim-to-rim contact, allowing them to uniquely self-assemble into large-area superstructures.

Self-doped p–n junctions in two-dimensional In2X3 van der Waals materials

2020 ◽  
Vol 7 (2) ◽  
pp. 504-510 ◽  
Author(s):  
Rui Peng ◽  
Yandong Ma ◽  
Shuai Zhang ◽  
Baibiao Huang ◽  
Liangzhi Kou ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Two Dimensional ◽  
Two Dimensional Materials ◽  
Van Der Waals Materials

With the advent of two-dimensional materials, it is now possible to realize p–n junctions at the ultimate thickness limit.

Tailoring the structural and electronic properties of an SnSe2/MoS2 van der Waals heterostructure with an electric field and the insertion of a graphene sheet

2019 ◽  
Vol 21 (39) ◽  
pp. 22140-22148 ◽  
Author(s):  
Tuan V. Vu ◽  
Nguyen V. Hieu ◽  
Le T. P. Thao ◽  
Nguyen N. Hieu ◽  
Huynh V. Phuc ◽  
...  
Keyword(s):  
Electric Field ◽  
Electronic Properties ◽  
Graphene Sheet ◽  
2D Materials ◽  
Van Der Waals ◽  
Optoelectronic Devices ◽  
Two Dimensional ◽  
Van Der Waals Heterostructure ◽  
Two Dimensional Materials ◽  
Structural And Electronic Properties

van der Waals heterostructures by stacking different two-dimensional materials are being considered as potential materials for nanoelectronic and optoelectronic devices because they can show the most potential advantages of individual 2D materials.

Determination of optimum optoelectronic properties in vertically stacked MoS2/h-BN/WSe2 van der Waals heterostructures

2019 ◽  
Vol 21 (41) ◽  
pp. 23179-23186 ◽  
Author(s):  
Shilin Tan ◽  
Yipeng Zhao ◽  
Jiansheng Dong ◽  
Guowei Yang ◽  
Gang Ouyang
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
Van Der Waals ◽  
Optoelectronic Properties ◽  
Photoelectric Conversion Efficiency ◽  
Optimal Thickness ◽  
Photoelectric Conversion ◽  
Van Der Waals Heterostructures ◽  
Vdw Heterostructure

Inserting an insulator at the interface in vdW heterostructure solar cell unit can improve the photoelectric conversion efficiency, and the insulator has an optimal thickness.

Beyond Graphene: Progress in Novel Two-Dimensional Materials and van der Waals Solids

2015 ◽  
Vol 45 (1) ◽  
pp. 1-27 ◽  
Author(s):  
Saptarshi Das ◽  
Joshua A. Robinson ◽  
Madan Dubey ◽  
Humberto Terrones ◽  
Mauricio Terrones
Keyword(s):  
Van Der Waals ◽  
Two Dimensional ◽  
Two Dimensional Materials
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