Ambipolar and n/p-type conduction enhancement of two-dimensional materials by surface charge transfer doping

Nanoscale ◽  
2019 ◽  
Vol 11 (32) ◽  
pp. 15359-15366 ◽  
Author(s):  
Shuangqing Fan ◽  
Xiaodong Tang ◽  
Daihua Zhang ◽  
Xiaodong Hu ◽  
Jing Liu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Surface Charge ◽  
Surface Functionalization ◽  
2D Materials ◽  
Two Dimensional ◽  
Two Dimensional Materials ◽  
P Type ◽  
Type Conduction

Through the surface functionalization of TPB, TTB and BCF, ambipolar, n and p-type doping is performed on seven 2D materials.

Controllable Synthesis of Ultrathin Layered Transition Metallic Hydroxide/Zeolitic Imidazolate Framework-67 Hybrid Nanosheets for High-Performance Supercapacitors

2021 ◽  
Author(s):  
Chunli Liu ◽  
Yang Bai ◽  
Ji Wang ◽  
Ziming Qiu ◽  
Huan Pang
Keyword(s):  
Charge Transfer ◽  
Energy Conversion ◽  
High Performance ◽  
2D Materials ◽  
Two Dimensional ◽  
Controllable Synthesis ◽  
Zeolitic Imidazolate Framework ◽  
Fast Charge ◽  
Energy Conversion And Storage ◽  
And Storage

Two-dimensional (2D) materials with structures having diverse features are promising for application in energy conversion and storage. A stronger layered orientation can guarantee fast charge transfer along the 2D planes...

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.

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.

Surface charge transfer induced p-CdS nanoribbon/n-Si heterojunctions as fast-speed self-driven photodetectors

2015 ◽  
Vol 3 (24) ◽  
pp. 6307-6313 ◽  
Author(s):  
Chao Xie ◽  
Fangze Li ◽  
Longhui Zeng ◽  
Linbao Luo ◽  
Li Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Surface Charge ◽  
Fast Speed ◽  
Type Silicon ◽  
P Type

Heterojunctions composed of single p-type CdS nanoribbons (NRs) and n-type silicon (Si) were successfully fabricated and can be applied as fast-speed self-driven visible photodetectors.

Molecular Functionalization of 2D-Materials: From Atomically Planar 2D Architectures to Off-Plane 3D Functional Materials

2021 ◽  
Author(s):  
Adam Brill ◽  
Elad Koren ◽  
Graham de Ruiter
Keyword(s):  
2D Materials ◽  
Functional Materials ◽  
Two Dimensional ◽  
The Past ◽  
Two Dimensional Materials

Atomically thin two-dimensional materials (2DMs) have moved in the past 15 years from a serendipitously isolated single-layered graphene curiosity to a near technological renaissance, where 2DMs such as graphene and...

Preparation of single-crystal metal substrates for the growth of high-quality two-dimensional materials

2021 ◽  
Vol 8 (1) ◽  
pp. 182-200
Author(s):  
Yanglizhi Li ◽  
Luzhao Sun ◽  
Haiyang Liu ◽  
Yuechen Wang ◽  
Zhongfan Liu
Keyword(s):  
Single Crystal ◽  
2D Materials ◽  
Controlled Growth ◽  
Two Dimensional ◽  
High Quality ◽  
Metal Substrates ◽  
Recent Advances ◽  
Two Dimensional Materials

Recent advances on preparing single-crystal metals and their crucial roles in controlled growth of high-quality 2D materials are reviewed.

2D materials towards ultrafast photonic applications

2020 ◽  
Vol 22 (39) ◽  
pp. 22140-22156
Author(s):  
Xin-Ping Zhai ◽  
Bo Ma ◽  
Qiang Wang ◽  
Hao-Li Zhang
Keyword(s):  
Optical Communications ◽  
2D Materials ◽  
Optical Limiting ◽  
Mode Locking ◽  
Optical Devices ◽  
Optical Modulation ◽  
Two Dimensional ◽  
Two Dimensional Materials ◽  
All Optical ◽  
Ultrafast Photonics

Two-dimensional materials are now excelling in yet another arena of ultrafast photonics, including optical modulation through optical limiting/mode-locking, photodetectors, optical communications, integrated miniaturized all-optical devices, etc.

scholarly journals Energy loss by fast-travelling charged particles traversing two-dimensional materials

2020 ◽  
Vol 233 ◽  
pp. 03005
Author(s):  
Jaime E. Santos ◽  
Mikhail Vasilevskiy ◽  
Nuno M.R. Peres ◽  
Antti-Pekka Jauho
Keyword(s):  
Thin Films ◽  
Energy Loss ◽  
2D Materials ◽  
Charged Particles ◽  
Monolayer Graphene ◽  
Two Dimensional ◽  
Particle Detection ◽  
Hydrodynamic Approximation ◽  
Radiation Losses ◽  
Two Dimensional Materials

We consider the problem of the radiation losses by fast-traveling particles traversing two-dimensional (2d) materials or thin films. After review¬ing the screening of electromagnetic fields by two dimensional conducting ma¬terials, we obtain the energy loss by a fast particle traversing such a material or film. In particular, we discuss the pattern of radiation emitted by monolayer graphene treated within a hydrodynamic approximation. These results are com¬pared with recent published results using similar approximations and, having in mind a potential application to particle detection, we briefly discuss how one can improve on the signals obtained by using other two-dimensional materials.

Fabrication of a three-terminal graphene nanoelectromechanical switch using two-dimensional materials

Nanoscale ◽  
2018 ◽  
Vol 10 (26) ◽  
pp. 12349-12355 ◽  
Author(s):  
Ngoc Huynh Van ◽  
Manoharan Muruganathan ◽  
Jothiramalingam Kulothungan ◽  
Hiroshi Mizuta
Keyword(s):  
Leakage Current ◽  
2D Materials ◽  
Two Dimensional ◽  
Subthreshold Slope ◽  
Drive Current ◽  
Exponential Increase ◽  
Two Dimensional Materials

An all-2D materials three-terminal subthermal subthreshold slope nanoelectromechanical (NEM) switch is realized to overcome the exponential increase in leakage current with an increase in the drive current of CMOS devices.

Tailored multifunctional micellar brushes via crystallization-driven growth from a surface

Science ◽  
2019 ◽  
Vol 366 (6469) ◽  
pp. 1095-1098 ◽  
Author(s):  
Jiandong Cai ◽  
Chen Li ◽  
Na Kong ◽  
Yi Lu ◽  
Geyu Lin ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Surface Functionalization ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Seeded Growth ◽  
Material Surfaces ◽  
Oil In Water ◽  
Two Dimensional Materials ◽  
Antibacterial Surface

The creation of nanostructures with precise chemistries on material surfaces is of importance in a wide variety of areas such as lithography, superhydrophobicity, and cell adhesion. We describe a platform for surface functionalization that involves the fabrication of cylindrical micellar brushes on a silicon wafer through seeded growth of crystallizable block copolymers at the termini of immobilized, surface-confined crystallite seeds. The density, length, and coronal chemistry of the micellar brushes can be precisely tuned, and post-growth decoration with nanoparticles enables applications in catalysis and antibacterial surface modification. The micellar brushes can also be grown on ultrathin two-dimensional materials such as graphene oxide nanosheets and further assembled into a membrane for the separation of oil-in-water emulsions and gold nanoparticles.

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