Download or read book Electronic Properties of Misoriented Two dimensional Materials written by Supeng Ge and published by . This book was released on 2017 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Van der Waals (vdW) heterostructures assembled from monolayers (one or a few) of graphene, hexagonal boron nitride (h-BN) are emerging as a new paradigm with which to attain desired electronic properties. Graphene/h-BN heterostructures have higher carrier mobility and better device performance when compared with traditional devices of graphene on SiO2/Si substrate. Vertical interlayer tunneling in Gr/BN/Gr structures display negative differential resistance (NDR). These exceptional electrical properties has attracted intense attentions for energy band engineering and device performance optimization. Interlayer electron transport through a graphene / hexagonal boron-nitride (h-BN) / graphene heterostructure is strongly affected by the misorientation angle & thetas; of the h-BN with respect to the graphene layers with different physical mechanisms governing the transport in different regimes of angle, Fermi level, and bias. The different mechanisms and their resulting signatures in resistance and current are analyzed using two different models, a tight-binding, non-equilibrium Green function model and an effective continuum model, and the qualitative features resulting from the two different models compare well. In the large-angle regime (& thetas;> 4°), the change in the effective h-BN bandgap seen by an electron at the K point of the graphene causes the resistance to monotonically increase with angle by several orders of magnitude reaching a maximum at & thetas; = 30°. It does not affect the peak-to-valley current ratios in devices that exhibit negative differential resistance. In the small-angle regime (& thetas;
Download or read book Electronic Properties Modeling of Two dimensional Materials written by Kuan Zhou and published by . This book was released on 2018 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional materials including graphene and transition metal dichalcogenides semiconductors are of tremondous interest for potential electronic applications because of their electronic properties and rich physics. In this work, using tight binding models, first principle calculation and non equilibrium Green's function(NEGF) simulations, interlayer resistance of misoriented MoS 2, electronic properties of tetralayer graphene and edge states of trilayer graphene nanoribbons are successively studied.
Download or read book Electronic Properties of Chiral Two dimensional Materials written by Christopher Lawrence Charles Triola (Ph. D.) and published by . This book was released on 2015 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two Dimensional Electronics and Optoelectronics written by Yoke Khin Yap and published by MDPI. This book was released on 2018-04-03 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Two-Dimensional Electronics and Optoelectronics" that was published in Electronics
Download or read book Electronic Properties of Various Two dimensional Materials written by Qirong Yao and published by . This book was released on 2019 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2D Materials and Van der Waals Heterostructures written by Antonio Di Bartolomeo and published by MDPI. This book was released on 2020-06-23 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of graphene and, more recently, two-dimensional materials has opened new perspectives in electronics, optoelectronics, energy harvesting, and sensing applications. This book, based on a Special Issue published in Nanomaterials – MDPI covers experimental, simulation, and theoretical research on 2D materials and their van der Waals heterojunctions. The emphasis is the physical properties and the applications of 2D materials in state-of-the-art sensors and electronic or optoelectronic devices.
Download or read book Printing of Graphene and Related 2D Materials written by Leonard W. T. Ng and published by Springer. This book was released on 2018-07-24 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the functional ink systems of graphene and related two-dimensional (2D) layered materials in the context of their formulation and potential for various applications, including in electronics, optoelectronics, energy, sensing, and composites using conventional graphics and 3D printing technologies. The authors explore the economic landscape of 2D materials and introduce readers to fundamental properties and production technologies. They also discuss major graphics printing technologies and conventional commercial printing processes that can be used for printing 2D material inks, as well as their specific strengths and weaknesses as manufacturing platforms. Special attention is also paid to scalable production methods for ink formulation, making this an ideal book for students and researchers in academia or industry, who work with functional graphene and other 2D material ink systems and their applications. Explains the state-of-the-art 2D material production technologies that can be manufactured at the industrial scale for functional ink formulation; Provides starting formulation examples of 2D material, functional inks for specific printing methods and their characterization techniques; Reviews existing demonstrations of applications related to printed 2D materials and provides possible future development directions while highlighting current knowledge gaps; Gives a snapshot and forecast of the commercial market for printed GRMs based on the current state of technologies and existing patents.
Download or read book Two Dimensional Electronics Prospects and Challenges written by Frank Schwierz and published by MDPI. This book was released on 2018-09-27 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Two-Dimensional Electronics - Prospects and Challenges" that was published in Electronics
Download or read book Electronic Vibrational and Thermoelectric Properties of Two dimensional Materials written by Darshana Wickramaratne and published by . This book was released on 2015 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few monolayers of the TMDCs can be misoriented with respect to each other due to the weak van-der-Waals (vdW) force at the interface of two monolayers. Misorientation of the bilayer semiconducting TMDCs increases the interlayer van-der-Waals gap distance, reduces the interlayer coupling and leads to an increase in the magnitude of the indirect bandgap by up to 100 meV compared to the registered bilayer.
Download or read book Theoretical Study of the Electronic Properties of 2D Materials written by José Ángel Silva Guillén and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Defects in Two Dimensional Materials written by Rafik Addou and published by Elsevier. This book was released on 2022-02-14 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Defects in Two-Dimensional Materials addresses the fundamental physics and chemistry of defects in 2D materials and their effects on physical, electrical and optical properties. The book explores 2D materials such as graphene, hexagonal boron nitride (h-BN) and transition metal dichalcogenides (TMD). This knowledge will enable scientists and engineers to tune 2D materials properties to meet specific application requirements. The book reviews the techniques to characterize 2D material defects and compares the defects present in the various 2D materials (e.g. graphene, h-BN, TMDs, phosphorene, silicene, etc.). As two-dimensional materials research and development is a fast-growing field that could lead to many industrial applications, the primary objective of this book is to review, discuss and present opportunities in controlling defects in these materials to improve device performance in general or use the defects in a controlled way for novel applications. Presents the theory, physics and chemistry of 2D materials Catalogues defects of 2D materials and their impacts on materials properties and performance Reviews methods to characterize, control and engineer defects in 2D materials
Download or read book 2D Materials written by Chatchawal Wongchoosuk and published by BoD – Books on Demand. This book was released on 2019-10-09 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional (2D) materials have attracted a great deal of attention in recent years due to their potential applications in gas/chemical sensors, healthcare monitoring, biomedicine, electronic skin, wearable sensing technology and advanced electronic devices. Graphene is one of today's most popular 2D nanomaterials alongside boron nitrides, molybdenum disulfide, black phosphorus and metal oxide nanosheets, all of which open up new opportunities for future devices. This book provides insights into models and theoretical backgrounds, important properties, characterizations and applications of 2D materials, including graphene, silicon nitride, aluminum nitride, ZnO thin film, phosphorene and molybdenum disulfide.
Download or read book Calculation and Design of Two dimensional Thermoelectric and Piezoelectric Materials written by San-Dong Guo and published by Frontiers Media SA. This book was released on 2023-08-25 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fascinating two-dimensional (2D) materials are being unconsciously applied in various fields from science to engineering, which is benefited from the glamorous physical and chemical properties of mechanics, optics, electronics, and magnetism. The representative 2D thermoelectric/piezoelectric materials can directly convert thermal/mechanical energy into electrical energy, which can resolve the energy issues and avoid further environmental deterioration. The thermoelectric or piezoelectric properties of various 2D materials, such as graphene, hexagonal boron nitride, black phosphorus, transition metal dichalcogenides (TMDs), arsenene, metal carbides and nitrides (MXenes), and so on, have been investigated in detail. Although tremendous progress has been achieved in the past few years, these properties still need to be improved for their practical application by designing new 2D materials, strain engineering, chemical functionalization, etc. In addition to this, in 2D materials, there are many other novel physical properties, such as magnetism, topology, valley, and so on. The combination of thermoelectricity/piezoelectricity with other unique properties may lead to novel device applications or scientific breakthroughs in new physics. Overall, the emergence of 2D thermoelectric and piezoelectric materials has expanded energy conversion research dramatically. By combing this new device concept with the novel 2D materials, original devices should have potential applications in energy harvesting.
Download or read book Engineering Two dimensional Materials written by Madisen A. Holbrook and published by . This book was released on 2021 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery of graphene and its unprecedented properties inspired an extraordinary increase in research progress, launching an era of two-dimensional (2D) electronic materials. These stable crystalline atomic layers enable the design of ultrathin 2D devices by combining different 2D materials as the foundational components. In order to control the properties of these devices, materials with a variety of electronic properties must be available. In this dissertation, we explore three distinct paths to achieve this goal: expanding the library of 2D materials, post synthesis defect engineering, and proximity engineering of the electrostatic environment. First, we report the MBE synthesis and STM/S characterization of a new 2D insulator, honeycomb structure BeO. In addition to determining the atomic structure and density of states, we used moiré pattern analysis to demonstrate the high crystallinity of the BeO and determined the work function modulation across the moiré pattern. We illustrate that the scalable growth, weak substrate interactions, and long-range crystallinity make honeycomb BeO an attractive candidate for future technological applications. The next focus of this work was defect engineering of monolayer WS2 by UHV annealing. A high concentration of S vacancies was generated by UHV annealing of the WS2, leading to S vacancy defect-defect coupling. Using STM/S we determined that the interaction of nearby S vacancies leads to an increase of deep in-gap states for different divacancy geometries. This indicates that vacancy engineering can be a useful tool to controllably manipulate 2D material electronic properties. Finally, we demonstrate the creation of a nanoscale planar p-n junction within a single monolayer of MoSe2 by modulating the electronic properties of the underlying substrate. By intercalating Se at the interface of the hBN/Ru substrate, the hBN becomes decoupled from the Ru, changing its conductivity and work function. We find that this change in the electronic landscape tunes the band gap of the overlying MoSe2, by screening and shifting the MoSe2 work function. Thus, this dissertation shines a light on the vast opportunities 2D materials provide for exploration of novel approaches to materials engineering, and demonstrates a tool set for manipulating the electronic properties of these fascinating materials
Download or read book Electronic Properties of Materials written by D.L. Grigsby and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 1816 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electronic and Transport Properties of Novel Two Dimensional Materials written by Muhammad Sufyan Ramzan and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ETCMOS 2016 Vol 6 Flexible Electronics and Materials Track written by ETCMOS and published by CMOS Emerging Technologies Research. This book was released on 2016-05-26 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presentation slides from the Flexible Electronics and Materials track at the ETCMOS 2016 conference in Montreal, May 25-27, 2016
