Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Optical Properties Of Two Dimensional Transition Metal Dichalcogenides
Download Optical Properties Of Two Dimensional Transition Metal Dichalcogenides full books in PDF, epub, and Kindle. Read online Optical Properties Of Two Dimensional Transition Metal Dichalcogenides ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Electronic and Optical Properties of Two-dimensional Transition Metal Dichalcogenides by : Andrew Bodhi Voshell
Download or read book Electronic and Optical Properties of Two-dimensional Transition Metal Dichalcogenides written by Andrew Bodhi Voshell and published by . This book was released on 2020 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Two-Dimensional Transition-Metal Dichalcogenides by : Alexander V. Kolobov
Download or read book Two-Dimensional Transition-Metal Dichalcogenides written by Alexander V. Kolobov and published by Springer. This book was released on 2016-07-26 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the current status of theoretical and experimental progress in 2 dimensional graphene-like monolayers and few-layers of transition metal dichalcogenides (TMDCs). Semiconducting monolayer TMDCs, due to the presence of a direct gap, significantly extend the potential of low-dimensional nanomaterials for applications in nanoelectronics and nano-optoelectronics as well as flexible nano-electronics with unprecedented possibilities to control the gap by external stimuli. Strong quantum confinement results in extremely high exciton binding energies which forms an interesting platform for both fundamental studies and device applications. Breaking of spatial inversion symmetry in monolayers results in strong spin-valley coupling potentially leading to their use in valleytronics. Starting with the basic chemistry of transition metals, the reader is introduced to the rich field of transition metal dichalcogenides. After a chapter on three dimensional crystals and a description of top-down and bottom-up fabrication methods of few-layer and single layer structures, the fascinating world of two-dimensional TMDCs structures is presented with their unique atomic, electronic, and magnetic properties. The book covers in detail particular features associated with decreased dimensionality such as stability and phase-transitions in monolayers, the appearance of a direct gap, large binding energy of 2D excitons and trions and their dynamics, Raman scattering associated with decreased dimensionality, extraordinarily strong light-matter interaction, layer-dependent photoluminescence properties, new physics associated with the destruction of the spatial inversion symmetry of the bulk phase, spin-orbit and spin-valley couplings. The book concludes with chapters on engineered heterostructures and device applications such as a monolayer MoS2 transistor. Considering the explosive interest in physics and applications of two-dimensional materials, this book is a valuable source of information for material scientists and engineers working in the field as well as for the graduate students majoring in materials science.
Book Synopsis Optical Properties of Two-dimensional Transition Metal Dichalcogenides by : Yuxuan Lin (S.M.)
Download or read book Optical Properties of Two-dimensional Transition Metal Dichalcogenides written by Yuxuan Lin (S.M.) and published by . This book was released on 2014 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: The re-discovery of the atomically thin transition metal dichalcogenides (TMDs), which are mostly semiconductors with a wide range of band gaps, has diversified the family of two-dimensional materials and boosted the research on their potential applications in the fields of logic nanoelectronics and high-performance nanophotonics. Many body effects are of great significance in 2-dimensional TMDs, especially when thinned down to a monolayer. As a result, the exciton-related phenomena are prominent in TMD monolayers, which distinguish the monolayers significantly from their bulk counterparts. This thesis systematically studies the optical properties in semiconducting, monolayer TMDs, including Raman spectroscopy, photoluminescence (PL), and optical absorption. In order to further understand the excitononic properties in 2-dimensional TMDs, we took monolayer MoS2 as an example, and studied its exciton behaviors with different carrier densities and dielectric environments through PL measurements with the help of electrochemical gating and non-ionic solvent immersion. Our findings are helpful to understand better the tightly bound excitons in low-dimensional systems and to provide a simple approach to controlling the generation of excitons and trions (charged excitons) selectively and separately.
Book Synopsis Two Dimensional Transition Metal Dichalcogenides by : Narayanasamy Sabari Arul
Download or read book Two Dimensional Transition Metal Dichalcogenides written by Narayanasamy Sabari Arul and published by Springer. This book was released on 2019-07-30 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents advanced synthesis techniques adopted to fabricate two-dimensional (2D) transition metal dichalcogenides (TMDs) materials with its enhanced properties towards their utilization in various applications such as, energy storage devices, photovoltaics, electrocatalysis, electronic devices, photocatalysts, sensing and biomedical applications. It provides detailed coverage on everything from the synthesis and properties to the applications and future prospects of research in 2D TMD nanomaterials.
Book Synopsis Symmetry-Dependent Electronic and Optical Properties of Two-Dimensional Transition Metal Dichalcogenides by :
Download or read book Symmetry-Dependent Electronic and Optical Properties of Two-Dimensional Transition Metal Dichalcogenides written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optical Properties of Two Dimensional Semiconductors by : Elizabeth Joan McCormick
Download or read book Optical Properties of Two Dimensional Semiconductors written by Elizabeth Joan McCormick and published by . This book was released on 2018 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two dimensional materials (2D) have become a huge research focus in recent history due to the interesting properties and phenomena that occur with reduced dimensionality. Additionally, the reduced size of these materials, the plethora of different properties available in the 2D arsenal, and the ability to relatively easily combine different 2D materials makes them extremely promising for nanodevices and future computing architectures. Here, we investigate the optical properties of two different 2D semiconductors, germanane and transition metal dichalcogenides (TMDs).
Download or read book 2D Materials written by Phaedon Avouris and published by Cambridge University Press. This book was released on 2017-06-29 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn about the most recent advances in 2D materials with this comprehensive and accessible text. Providing all the necessary materials science and physics background, leading experts discuss the fundamental properties of a wide range of 2D materials, and their potential applications in electronic, optoelectronic and photonic devices. Several important classes of materials are covered, from more established ones such as graphene, hexagonal boron nitride, and transition metal dichalcogenides, to new and emerging materials such as black phosphorus, silicene, and germanene. Readers will gain an in-depth understanding of the electronic structure and optical, thermal, mechanical, vibrational, spin and plasmonic properties of each material, as well as the different techniques that can be used for their synthesis. Presenting a unified perspective on 2D materials, this is an excellent resource for graduate students, researchers and practitioners working in nanotechnology, nanoelectronics, nanophotonics, condensed matter physics, and chemistry.
Book Synopsis Computational Study of Structural and Optical Properties of Two-dimensional Transition-metal Dichalcogenides with Implanted Defects by : Stefan Rost
Download or read book Computational Study of Structural and Optical Properties of Two-dimensional Transition-metal Dichalcogenides with Implanted Defects written by Stefan Rost and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crystallization of Two-dimensional Transition Metal Dichalcogenides for Tailored Optical Properties by : Rachel H. Rai
Download or read book Crystallization of Two-dimensional Transition Metal Dichalcogenides for Tailored Optical Properties written by Rachel H. Rai and published by . This book was released on 2019 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two dimensional (2D) semiconducting transition metal dichalcogenides (TMD) are new materials that exhibit unique and useful combinations of physical properties, such as photoluminescence (PL) in the visible to NIR frequencies coupled with mechanical flexibility. Such properties make 2D TMDs attractive candidates for the next generation of compact, unobtrusive, and low-cost opto-electronic technologies. However, the incorporation of 2D TMDs in commercial applications and products is currently limited by the absence of synthesis approaches yielding uniform, large area films with desired properties. Thus, this work encompasses innovative techniques to tailor optical properties of TMD thin films by controlling their area, thickness, grain size, defect density and uniformity during and after processing. These new approaches start with magnetron sputtering of ultra-thin amorphous TMD films on either flexible or rigid substrates. The amorphous precursor films were then subjected to illumination with energy beams to induce crystallization, including laser light, broadband radiation from a xenon lamp, and nanoscale electron beams. Magnetron sputtering was selected as the precursor deposition technique due to the large area capability coupled with low processing temperatures, allowing deposition directly on polymer substrates. Furthermore, modulation of the energy flux to the growing film during magnetron sputtering (by controlling the flux of incident energetic particles) provided an opportunity to control the density of pre-existing nuclei in the amorphous material for an added measure of structural control upon illumination. The structure, composition and optical properties of crystalline 2D TMD materials on flexible and rigid substrates after illumination, were then correlated to the pre-existing amorphous structure and process conditions for selected TMD compositions. Important conclusions from the work include significant insight on the mechanisms of crystallization kinetics, as well as new correlations of structure to optical properties, including a dependence on photoluminescence intensity accompanied by a change in crystal edge density, correlating well to theory. In summary, this work employs various crystallization techniques to understand nucleation and growth of 2D TMD materials, and application of nucleation and growth mechanisms to control optical properties.
Book Synopsis Optical Study on Two Dimensional Transition Metal Dichalcogenides by : Bairen Zhu
Download or read book Optical Study on Two Dimensional Transition Metal Dichalcogenides written by Bairen Zhu and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Optical Study on Two Dimensional Transition Metal Dichalcogenides" by Bairen, Zhu, 朱柏仁, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Atomically thin group-VI transition metal dichalcogenides (TMDC) has been emerging as a family of intrinsic 2-dimensional (2D) crystals with a sizeable bandgap in the visible and near infrared range, satisfying numerous requirements for ultimate electronics and optoelectronics. This intrinsic 2D crystal also provides a perfect platform for physics study in 2D semiconductors. The characteristic inversion symmetry breaking presented in monolayer TMDCs leads to non-zero but contrasting Berry curvatures and orbital magnetic moments at K/K' valleys located at the corners of the first Brillouin zone. These features provide an opportunity to manipulate electrons' additional internal degrees of freedom, namely the valley degree of freedom, making monolayer TMDC a promising candidate for the conceptual valleytronics. Besides, the strong spin-orbit interactions and the subsequent spin-valley coupling demonstrated in 2D TMDCs open potential new routes towards quantum manipulation. In this thesis, I give a brief review on the background and our progress of the physics study in 2D TMDCs (MoS2, WS2) via optical spectroscopy. Particularly, our experimental approach on the excitonic effect, valley dependent circular dichroism, and the spin-valley coupling in monolayer and bilayer TMDCs are elaborated in individual chapters. DOI: 10.5353/th_b5351031 Subjects: Transition metal compounds - Optical properties Chalcogenides - Optical properties
Book Synopsis Optical Properties of 2D Transition Metal Dichalcogenides Enhanced by Plasmonic Nanostructures by : Zhuo Wang
Download or read book Optical Properties of 2D Transition Metal Dichalcogenides Enhanced by Plasmonic Nanostructures written by Zhuo Wang and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Probing the Response of Two-Dimensional Crystals by Optical Spectroscopy by : Yilei Li
Download or read book Probing the Response of Two-Dimensional Crystals by Optical Spectroscopy written by Yilei Li and published by Springer. This book was released on 2015-11-09 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on the study of the optical response of new atomically thin two-dimensional crystals, principally the family of transition metal dichalcogenides like MoS2. One central theme of the thesis is the precise treatment of the linear and second-order nonlinear optical susceptibilities of atomically thin transition metal dichalcogenides. In addition to their significant scientific interest as fundamental material responses, these studies provide essential knowledge and convenient characterization tools for the application of these 2D materials in opto-electronic devices. Another important theme of the thesis is the valley physics of atomically thin transition metal dichalcogenides. It is shown that the degeneracy in the valley degree of freedom can be lifted and a valley polarization can be created using a magnetic field, which breaks time reversal symmetry in these materials. These findings enhance our basic understanding of the valley electronic states and open up new opportunities for valleytronic applications using two-dimensional materials.
Book Synopsis Electronic and Optical Properties of Two-Dimensional Transition Metal Dichalcogenide Nanoribbons by : Santosh Neupane
Download or read book Electronic and Optical Properties of Two-Dimensional Transition Metal Dichalcogenide Nanoribbons written by Santosh Neupane and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional (2D) layered materials, such as transition metal dichalcogenides (TMDs), are the subject of intense research interest as platforms for both developing atomically-thin devices and exploring novel physics. Nanoribbons are intriguing, reduced forms of 2D layered materials. They exhibit more spatial confinement effects and rich edge states than their 2D counterparts, which can result in drastic changes in electronic and optical properties. This dissertation presents an investigation of the electronic structure properties of bent TMDs nanoribbons using density functional theory (DFT) and explores their optical absorption and excitonic states through many-body perturbation GW and BSE (Bethe-Salpeter equation) methods.The band structures, band gaps, and projected spin polarization of semiconducting armchair tungsten diselenide (WSe2) nanoribbons are calculated under various bending curvatures and electron/hole doping using density functional approximations (DFAs). Additionally, optical absorption and excitonic states are analyzed using the many-body perturbation GW-BSE approach. The findings reveal that the band gap of the nanoribbon can be modified from direct to indirect or vice versa under appropriate bending curvatures. Furthermore, doping or bending the nanoribbons with proper curvatures leads to spin polarization anisotropy within the bands around the Fermi level. This suggests their potential utilization in compact and controllable magnetic nanodevices and spintronics. The exciton states exhibit mixed or various spin configurations in the electron and hole pairs, which are controlled by the bending, and hold promise for applications in spin-based quantum information processes. Defects are commonly present in 2D TMD materials and significantly alter their properties. The interaction between edge states and defect states in tungsten disulfide (WS2) nanoribbons with line defects under different bending curvatures is investigated using density functional theory (DFT). The results are compared with quasiparticle GW calculations to gain insights into the limitations of DFAs for band gaps and energies of defect states. The investigations uncover interesting semiconducting-to-metallic phase transitions, indicating potential applications in nano-electronics or molecular electronics. Moreover, optical absorption of the bent and defective nanoribbons is calculated using the many-body GW-BSE approach, revealing a tunable optical spectrum and diverse exciton states in the defective WS2 nanoribbons.
Book Synopsis Two-Dimensional Transition-Metal Dichalcogenides by : Chi Sin Tang
Download or read book Two-Dimensional Transition-Metal Dichalcogenides written by Chi Sin Tang and published by John Wiley & Sons. This book was released on 2023-11-14 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-Dimensional Transition-Metal Dichalcogenides Comprehensive resource covering rapid scientific and technological development of polymorphic two-dimensional transition-metal dichalcogenides (2D-TMDs) over a range of disciplines and applications Two-Dimensional Transition-Metal Dichalcogenides: Phase Engineering and Applications in Electronics and Optoelectronics provides a discussion on the history of phase engineering in 2D-TMDs as well as an in-depth treatment on the structural and electronic properties of 2D-TMDs in their respective polymorphic structures. The text addresses different forms of in-situ synthesis, phase transformation, and characterization methods for 2D-TMD materials and provides a comprehensive treatment of both the theoretical and experimental studies that have been conducted on 2D-TMDs in their respective phases. Two-Dimensional Transition-Metal Dichalcogenides includes further information on: Thermoelectric, fundamental spin-orbit structures, Weyl semi-metallic, and superconductive and related ferromagnetic properties that 2D-TMD materials possess Existing and prospective applications of 2D-TMDs in the field of electronics and optoelectronics as well as clean energy, catalysis, and memristors Magnetism and spin structures of polymorphic 2D-TMDs and further considerations on the challenges confronting the utilization of TMD-based systems Recent progress of mechanical exfoliation and the application in the study of 2D materials and other modern opportunities for progress in the field Two-Dimensional Transition-Metal Dichalcogenides provides in-depth review introducing the electronic properties of two-dimensional transition-metal dichalcogenides with updates to the phase engineering transition strategies and a diverse range of arising applications, making it an essential resource for scientists, chemists, physicists, and engineers across a wide range of disciplines.
Book Synopsis Defects in Two-Dimensional Materials by : Rafik Addou
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 Ultrafast Photonics written by A. Miller and published by CRC Press. This book was released on 2019-08-22 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrafast photonics has become an interdisciplinary topic of high international research interest because of the spectacular development of compact and efficient lasers producing optical pulses with durations in the femtosecond time domain. Present day long-haul telecommunications systems are almost entirely based on the transmission of short burst
Book Synopsis 2D Materials for Nanophotonics by : Young Min Jhon
Download or read book 2D Materials for Nanophotonics written by Young Min Jhon and published by Elsevier. This book was released on 2020-11-29 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2D Materials for Nanophotonics presents a detailed overview of the applications of 2D materials for nanophotonics, covering the photonic properties of a range of 2D materials including graphene, 2D phosphorene and MXenes, and discussing applications in lighting and energy storage. This comprehensive reference is ideal for readers seeking a detailed and critical analysis of how 2D materials are being used for a range of photonic and optical applications. Outlines the major photonic properties in a variety of 2D materials Demonstrates major applications in lighting and energy storage Explores the challenges of using 2D materials in photonics
