scholarly journals Hybrid van der Waals heterojunction based on two-dimensional materials

2021 ◽  
Vol 2109 (1) ◽  
pp. 012012
Author(s):  
Cuicui Sun ◽  
Meili Qi
Keyword(s):  
2D Materials ◽  
Van Der Waals ◽  
Research Progress ◽  
Material Research ◽  
Two Dimensional ◽  
Covalent Bonds ◽  
2D Layered Materials ◽  
Two Dimensional Materials ◽  
Non Covalent Interactions ◽  
Heterostructure Devices

Abstract Since the discovery of graphene, two-dimensional (2D) layered materials have always been the focus of material research. The layers of 2D materials are covalent bonds, and the layers are weakly bonded to adjacent layers through van der Waals (vdW) interactions. Since any dangling-bond-free surface could be combined with another material through vdW forces, the concept can be extended. This can refer to the integration of 2D materials with any other non-2D materials through non-covalent interactions. The emerging mixed-dimensional (2D+nD, where n is 0, 1 or 3) heterostructure devices has been studied and represents a wider range of vdW heterostructures. New electronic devices and optoelectronic devices based on such heterojunctions have unique functions. Therefore, this article depicts the research progress of (2D+nD, where n is 0, 1 or 3) vdW heterojunctions based on 2D materials.

scholarly journals A Universal Atomic Substitution Conversion Strategy Towards Synthesis of Large-Size Ultrathin Nonlayered Two-Dimensional Materials

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Mei Zhao ◽  
Sijie Yang ◽  
Kenan Zhang ◽  
Lijie Zhang ◽  
Ping Chen ◽  
...  
Keyword(s):  
Theoretical Calculations ◽  
2D Materials ◽  
Direct Synthesis ◽  
Two Dimensional ◽  
Covalent Bonds ◽  
2D Layered Materials ◽  
Large Size ◽  
Two Dimensional Materials ◽  
Microfabrication Technique ◽  
Atomic Substitution

AbstractNonlayered two-dimensional (2D) materials have attracted increasing attention, due to novel physical properties, unique surface structure, and high compatibility with microfabrication technique. However, owing to the inherent strong covalent bonds, the direct synthesis of 2D planar structure from nonlayered materials, especially for the realization of large-size ultrathin 2D nonlayered materials, is still a huge challenge. Here, a general atomic substitution conversion strategy is proposed to synthesize large-size, ultrathin nonlayered 2D materials. Taking nonlayered CdS as a typical example, large-size ultrathin nonlayered CdS single-crystalline flakes are successfully achieved via a facile low-temperature chemical sulfurization method, where pre-grown layered CdI2 flakes are employed as the precursor via a simple hot plate assisted vertical vapor deposition method. The size and thickness of CdS flakes can be controlled by the CdI2 precursor. The growth mechanism is ascribed to the chemical substitution reaction from I to S atoms between CdI2 and CdS, which has been evidenced by experiments and theoretical calculations. The atomic substitution conversion strategy demonstrates that the existing 2D layered materials can serve as the precursor for difficult-to-synthesize nonlayered 2D materials, providing a bridge between layered and nonlayered materials, meanwhile realizing the fabrication of large-size ultrathin nonlayered 2D materials.

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.

Field emission applications of graphene analogous two dimensional materials: Recent developments and future perspectives

2021 ◽  
Author(s):  
Abhinandan Patra ◽  
Mahendra A More ◽  
Dattatray J Late ◽  
Chandra Sekhar Rout
Keyword(s):  
Field Emission ◽  
2D Materials ◽  
Layered Materials ◽  
Two Dimensional ◽  
Future Perspectives ◽  
2D Layered Materials ◽  
Two Dimensional Materials ◽  
Recent Developments ◽  
Technology Industries ◽  
Device Technology

2D layered materials are widely regarded as the revolutionary class of materials and hold great promises in the modern device technology industries. 2D materials family covers almost the entire spectrum...

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,...

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.

Collaborative compromise of two-dimensional materials in sodium ion capacitors: mechanisms and designing strategies

2021 ◽  
Vol 9 (13) ◽  
pp. 8129-8159
Author(s):  
Yingjun Jiang ◽  
Zhifang Liu ◽  
Songtao Guo ◽  
Libin Wang ◽  
Yaqian Li ◽  
...  
Keyword(s):  
2D Materials ◽  
Sodium Ion ◽  
Research Progress ◽  
Two Dimensional ◽  
Two Dimensional Materials

This review provides a comprehensive summary of the research progress of emerging 2D materials in sodium ion capacitors.

scholarly journals MOLECULAR FUNCTIONALIZATION OF 2D MATERIALS

2021 ◽  
pp. 2140002
Author(s):  
MIRIAM C. RODRÍGUEZ GONZÁLEZ ◽  
RAHUL SASIKUMAR ◽  
STEVEN DE FEYTER
Keyword(s):  
2D Materials ◽  
Layered Materials ◽  
Two Dimensional ◽  
Chemical Modifications ◽  
2D Layered Materials ◽  
Non Covalent Interactions ◽  
Covalent Interactions

In this paper, we give an overview of different chemical modifications that can be done on the surface of two-dimensional (2D) layered materials. We place emphasis on the diversity of reactions that have been proposed and are now available to surface scientists working in 2D materials field. Using mainly, but not exclusively, MoS2 as example, reactions involving covalent and non-covalent interactions are discussed.

scholarly journals Rectifying optoelectronic memory based on WSe2/graphene heterostructures

2021 ◽  
Author(s):  
Sunghyung Kim ◽  
Myung Uk Park ◽  
Changjun Lee ◽  
Sum-Gyun Yi ◽  
Myeongjin Kim ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Floating Gate ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Two Dimensional Materials ◽  
Heterostructure Devices ◽  
Multifunctional Devices

Van der Waals heterostructures composed of two-dimensional materials vertically stacked have been extensively studied to develop various multifunctional devices. Here, we report WSe2/graphene heterostructure devices with a top floating gate...

Two-dimensional topological insulators exfoliated from Na3Bi-like Dirac semimetals

2021 ◽  
Author(s):  
Xiaoqiu Guo ◽  
Ruixin Yu ◽  
Jingwen Jiang ◽  
Zhuang Ma ◽  
Xiuwen Zhang
Keyword(s):  
Physical Properties ◽  
Epitaxial Growth ◽  
Topological Insulators ◽  
2D Materials ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Dirac Semimetals

Topological insulation is widely predicted in two-dimensional (2D) materials realized by epitaxial growth or van der Waals (vdW) exfoliation. Such 2D topological insulators (TI’s) host many interesting physical properties such...

scholarly journals Recent advances in mode-locked fiber lasers based on two-dimensional materials

Nanophotonics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 2315-2340 ◽  
Author(s):  
Junli Wang ◽  
Xiaoli Wang ◽  
Jingjing Lei ◽  
Mengyuan Ma ◽  
Cong Wang ◽  
...  
Keyword(s):  
Fiber Lasers ◽  
2D Materials ◽  
Synthesis Methods ◽  
Two Dimensional ◽  
New Materials ◽  
Saturable Absorbers ◽  
Operating Wavelength ◽  
Recent Advances ◽  
Two Dimensional Materials ◽  
Diverse Mode

AbstractDue to the unique properties of two-dimensional (2D) materials, much attention has been paid to the exploration and application of 2D materials. In this review, we focus on the application of 2D materials in mode-locked fiber lasers. We summarize the synthesis methods for 2D materials, fiber integration with 2D materials and 2D materials based saturable absorbers. We discuss the performance of the diverse mode-locked fiber lasers in the typical operating wavelength such as 1, 1.5, 2 and 3 μm. Finally, a summary and outlook of the further applications of the new materials in mode-locked fiber lasers are presented.

Sign in / Sign up

Export Citation Format

Share Document