scholarly journals 2D Materials: Large-Area and High-Quality 2D Transition Metal Telluride (Adv. Mater. 3/2017)

2017 ◽  
Vol 29 (3) ◽  
Author(s):  
Jiadong Zhou ◽  
Fucai Liu ◽  
Junhao Lin ◽  
Xiangwei Huang ◽  
Juan Xia ◽  
...  
Keyword(s):  
Transition Metal ◽  
2D Materials ◽  
Large Area ◽  
High Quality

scholarly journals Pulsed laser deposition of single-layer MoS2 on Au(111): from nanosized crystals to large-area films

2019 ◽  
Vol 1 (2) ◽  
pp. 643-655 ◽  
Author(s):  
Francesco Tumino ◽  
Carlo S. Casari ◽  
Matteo Passoni ◽  
Valeria Russo ◽  
Andrea Li Bassi
Keyword(s):  
Pulsed Laser Deposition ◽  
2D Materials ◽  
Optoelectronic Devices ◽  
Pulsed Laser ◽  
Single Layer ◽  
Laser Deposition ◽  
Large Area ◽  
Molybdenum Disulphide ◽  
High Quality ◽  
Nanosized Crystals

Molybdenum disulphide (MoS2) is a promising material for heterogeneous catalysis and novel 2D optoelectronic devices. In this work, single-layer MoS2 is synthesized on Au(111) by pulsed laser deposition, showing the potentialities of this technique in the synthesis of high-quality 2D materials films.

scholarly journals A Review on Chemical Vapour Deposition of Two-Dimensional MoS2 Flakes

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7590
Author(s):  
Luca Seravalli ◽  
Matteo Bosi
Keyword(s):  
Transition Metal ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
2D Materials ◽  
Transition Metal Dichalcogenides ◽  
Chemical Vapour ◽  
Two Dimensional ◽  
Large Area ◽  
Reliable Technique ◽  
Metal Dichalcogenides

Two-dimensional (2D) materials such as graphene, transition metal dichalcogenides, and boron nitride have recently emerged as promising candidates for novel applications in sensing and for new electronic and photonic devices. Their exceptional mechanical, electronic, optical, and transport properties show peculiar differences from those of their bulk counterparts and may allow for future radical innovation breakthroughs in different applications. Control and reproducibility of synthesis are two essential, key factors required to drive the development of 2D materials, because their industrial application is directly linked to the development of a high-throughput and reliable technique to obtain 2D layers of different materials on large area substrates. Among various methods, chemical vapour deposition is considered an excellent candidate for this goal thanks to its simplicity, widespread use, and compatibility with other processes used to deposit other semiconductors. In this review, we explore the chemical vapour deposition of MoS2, considered one of the most promising and successful transition metal dichalcogenides. We summarize the basics of the synthesis procedure, discussing in depth: (i) the different substrates used for its deposition, (ii) precursors (solid, liquid, gaseous) available, and (iii) different types of promoters that favour the growth of two-dimensional layers. We also present a comprehensive analysis of the status of the research on the growth mechanisms of the flakes.

scholarly journals Large-Area and High-Quality 2D Transition Metal Telluride

2016 ◽  
Vol 29 (3) ◽  
pp. 1603471 ◽  
Author(s):  
Jiadong Zhou ◽  
Fucai Liu ◽  
Junhao Lin ◽  
Xiangwei Huang ◽  
Juan Xia ◽  
...  
Keyword(s):  
Transition Metal ◽  
Large Area ◽  
High Quality

scholarly journals Second-harmonic generation enhancement in monolayer transition-metal dichalcogenides by using an epsilon-near-zero substrate

2021 ◽  
Vol 3 (1) ◽  
pp. 272-278
Author(s):  
Pilar G. Vianna ◽  
Aline dos S. Almeida ◽  
Rodrigo M. Gerosa ◽  
Dario A. Bahamon ◽  
Christiano J. S. de Matos
Keyword(s):  
Dielectric Constant ◽  
Transition Metal ◽  
Harmonic Generation ◽  
Nonlinear Effect ◽  
Second Harmonic ◽  
2D Materials ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Metal Dichalcogenides ◽  
Epsilon Near Zero

The scheme illustrates a monolayer transition-metal dichalcogenide on an epsilon-near-zero substrate. The substrate near-zero dielectric constant is used as the enhancement mechanism to maximize the SHG nonlinear effect on monolayer 2D materials.

Combined Healing and Doping of Transition Metal Dichalcogenides Through Molecular Functionalization

2021 ◽  
Author(s):  
Sai Manoj Gali ◽  
David Beljonne
Keyword(s):  
Transition Metal ◽  
Charge Transport ◽  
2D Materials ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Metal Dichalcogenides

Transition Metal Dichalcogenides (TMDCs) are emerging as promising two-dimensional (2D) materials. Yet, TMDCs are prone to inherent defects such as chalcogen vacancies, which are detrimental to charge transport. Passivation of...

Lateral-size control of exfoliated transition-metal–oxide 2D materials by machine learning on small data

Nanoscale ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 3853-3859
Author(s):  
Ryosuke Mizuguchi ◽  
Yasuhiko Igarashi ◽  
Hiroaki Imai ◽  
Yuya Oaki
Keyword(s):  
Machine Learning ◽  
Transition Metal ◽  
Metal Oxide ◽  
2D Materials ◽  
Size Control ◽  
Transition Metal Oxide ◽  
Small Data ◽  
Lateral Size

Lateral sizes of the exfoliated transition-metal–oxide nanosheets were predicted and controlled by the assistance of machine learning. 

scholarly journals Reactive plasma cleaning and restoration of transition metal dichalcogenide monolayers

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Daniil Marinov ◽  
Jean-François de Marneffe ◽  
Quentin Smets ◽  
Goutham Arutchelvan ◽  
Kristof M. Bal ◽  
...  
Keyword(s):  
High Temperature ◽  
Transition Metal ◽  
Field Effect Transistors ◽  
Removal Rate ◽  
2D Materials ◽  
Scale Up ◽  
Transition Metal Dichalcogenides ◽  
Chemical Properties ◽  
Plasma Cleaning ◽  
Transition Metal Dichalcogenide

AbstractThe cleaning of two-dimensional (2D) materials is an essential step in the fabrication of future devices, leveraging their unique physical, optical, and chemical properties. Part of these emerging 2D materials are transition metal dichalcogenides (TMDs). So far there is limited understanding of the cleaning of “monolayer” TMD materials. In this study, we report on the use of downstream H2 plasma to clean the surface of monolayer WS2 grown by MOCVD. We demonstrate that high-temperature processing is essential, allowing to maximize the removal rate of polymers and to mitigate damage caused to the WS2 in the form of sulfur vacancies. We show that low temperature in situ carbonyl sulfide (OCS) soak is an efficient way to resulfurize the material, besides high-temperature H2S annealing. The cleaning processes and mechanisms elucidated in this work are tested on back-gated field-effect transistors, confirming that transport properties of WS2 devices can be maintained by the combination of H2 plasma cleaning and OCS restoration. The low-damage plasma cleaning based on H2 and OCS is very reproducible, fast (completed in a few minutes) and uses a 300 mm industrial plasma etch system qualified for standard semiconductor pilot production. This process is, therefore, expected to enable the industrial scale-up of 2D-based devices, co-integrated with silicon technology.

scholarly journals Chlorosulfuric acid-assisted production of functional 2D materials

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Mohsen Moazzami Gudarzi ◽  
Maryana Asaad ◽  
Boyang Mao ◽  
Gergo Pinter ◽  
Jianqiang Guo ◽  
...  
Keyword(s):  
Hexagonal Boron Nitride ◽  
2D Materials ◽  
Real Life ◽  
Large Area ◽  
Polar Solvents ◽  
Aspect Ratios ◽  
Two Dimensional Materials ◽  
Liquid Phase Exfoliation

AbstractThe use of two-dimensional materials in bulk functional applications requires the ability to fabricate defect-free 2D sheets with large aspect ratios. Despite huge research efforts, current bulk exfoliation methods require a compromise between the quality of the final flakes and their lateral size, restricting the effectiveness of the product. In this work, we describe an intercalation-assisted exfoliation route, which allows the production of high-quality graphene, hexagonal boron nitride, and molybdenum disulfide 2D sheets with average aspect ratios 30 times larger than that obtained via conventional liquid-phase exfoliation. The combination of chlorosulfuric acid intercalation with in situ pyrene sulfonate functionalisation produces a suspension of thin large-area flakes, which are stable in various polar solvents. The described method is simple and requires no special laboratory conditions. We demonstrate that these suspensions can be used for fabrication of laminates and coatings with electrical properties suitable for a number of real-life applications.

Large-Area Organic–Transition Metal Dichalcogenide Hybrid Light-Emitting Device

ACS Photonics ◽  
2021 ◽  
Author(s):  
Jongchan Kim ◽  
Siwei Zhang ◽  
Shaocong Hou ◽  
Byungjun Lee ◽  
Guodan Wei ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Large Area ◽  
Light Emitting ◽  
Organic Transition
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