Graphene And Hexagonal Boron Nitride Heterostructures For Beyond Cmos Applications

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Graphene and Hexagonal Boron Nitride Heterostructures for Beyond CMOS Applications

Author : Sangwoo Kang
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.:/5 (978 download)

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Book Synopsis Graphene and Hexagonal Boron Nitride Heterostructures for Beyond CMOS Applications by : Sangwoo Kang

Download or read book Graphene and Hexagonal Boron Nitride Heterostructures for Beyond CMOS Applications written by Sangwoo Kang and published by . This book was released on 2016 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scaling limits of conventional complementary metal oxide semiconductor (CMOS) technology has motivated the research of numerous beyond CMOS device concepts. One such device is the interlayer tunnel FET (ITFET). This device is demonstrated using the two-dimensional (2D) materials bilayer graphene and hexagonal boron nitride (hBN). Stacking these materials together, we fabricate a double bilayer graphene and hBN heterostructure where the two graphene layers function as the top and bottom electrodes and the hBN as the tunnel barrier of the ITFET. Significant negative differential resistance (NDR) in the interlayer current-voltage characteristic is demonstrated at room temperature. Electrostatic analysis reveals that the multiple NDR peaks are due to energetic band alignment between the two sub-bands of the top and bottom bilayer graphene at the K-point of the Brillouin zone. Temperature dependent and parallel magnetic field measurements are conducted to further confirm that the conduction mechanism is momentum and energy conserving resonant tunneling. In addition, we demonstrate how the NDR can be used for implementing a one-transistor static random access memory element. Improvements in the transfer method which allowed rotationally aligned top and bottom electrode layers, made possible extensive experimental studies of 2D heterostructure based ITFETs. Utilizing such technique, we conducted experiments involving thicker multilayer graphene. We analyze how the graphene thickness and stacking order can influence the resonance condition and how this affects the overall device characteristic. The effects of interlayer hBN scaling such as increased tunneling current and peak position shifting is also briefly dealt with. Current-voltage simulations based on Bardeen transfer Hamiltonian approach were conducted for these devices, and it is shown that the peak positions predicted by theory match well with those obtained through measurements.

Graphene, Carbon Nanotubes, and Nanostructures

Author : James E. Morris
Publisher : CRC Press
ISBN 13 : 1466560576
Total Pages : 364 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Graphene, Carbon Nanotubes, and Nanostructures by : James E. Morris

Download or read book Graphene, Carbon Nanotubes, and Nanostructures written by James E. Morris and published by CRC Press. This book was released on 2017-07-28 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphene, Carbon Nanotubes, and Nanostructures: Techniques and Applications offers a comprehensive review of groundbreaking research in nanofabrication technology and explores myriad applications that this technology has enabled. The book examines the historical evolution and emerging trends of nanofabrication and supplies an analytical understanding of some of the most important underlying nanofabrication technologies, with an emphasis on graphene, carbon nanotubes (CNTs), and nanowires. Featuring contributions by experts from academia and industry around the world, this book presents cutting-edge nanofabrication research in a wide range of areas. Topics include: CNT electrodynamics and signal propagation models Electronic structure calculations of a graphene–hexagonal boron nitride interface to aid the understanding of experimental devices based on these heterostructures How a laser field would modify the electronic structure and transport response of graphene, to generate bandgaps The fabrication of transparent CNT electrodes for organic light-emitting diodes Direct graphene growth on dielectric substrates, and potential applications in electronic and spintronic devices CNTs as a promising candidate for next-generation interconnect conductors CMOS–CNT integration approaches, including the promising localized heating CNT synthesis method CNTs in electrochemical and optical biosensors The synthesis of diamondoids by pulsed laser ablation plasmas generated in supercritical fluids, and possible applications The use of DNA nanostructures in lithography CMOS-compatible silicon nanowire biosensors The use of titanium oxide-B nanowires to detect explosive vapors The properties of protective layers on silver nanoparticles for ink-jet printing Nanostructured thin-film production using microreactors A one-stop reference for professionals, researchers, and graduate students working in nanofabrication, this book will also be useful for investors who want an overview of the current nanofabrication landscape.

Encyclopedia of Interfacial Chemistry

Author :
Publisher : Elsevier
ISBN 13 : 0128098945
Total Pages : 5276 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Encyclopedia of Interfacial Chemistry by :

Download or read book Encyclopedia of Interfacial Chemistry written by and published by Elsevier. This book was released on 2018-03-29 with total page 5276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry, Seven Volume Set summarizes current, fundamental knowledge of interfacial chemistry, bringing readers the latest developments in the field. As the chemical and physical properties and processes at solid and liquid interfaces are the scientific basis of so many technologies which enhance our lives and create new opportunities, its important to highlight how these technologies enable the design and optimization of functional materials for heterogeneous and electro-catalysts in food production, pollution control, energy conversion and storage, medical applications requiring biocompatibility, drug delivery, and more. This book provides an interdisciplinary view that lies at the intersection of these fields. Presents fundamental knowledge of interfacial chemistry, surface science and electrochemistry and provides cutting-edge research from academics and practitioners across various fields and global regions

Atomic-Scale Electronics Beyond CMOS

Author : Mircea Dragoman
Publisher : Springer Nature
ISBN 13 : 3030605639
Total Pages : 221 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Atomic-Scale Electronics Beyond CMOS by : Mircea Dragoman

Download or read book Atomic-Scale Electronics Beyond CMOS written by Mircea Dragoman and published by Springer Nature. This book was released on 2020-11-16 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores emerging topics in atomic- and nano-scale electronics after the era of Moore’s Law, covering both the physical principles behind, and technological implementations for many devices that are now expected to become key elements of the future of nanoelectronics beyond traditional complementary metal-oxide semiconductors (CMOS). Moore’s law is not a physical law itself, but rather a visionary prediction that has worked well for more than 50 years but is rapidly coming to its end as the gate length of CMOS transistors approaches the length-scale of only a few atoms. Thus, the key question here is: “What is the future for nanoelectronics beyond CMOS?” The possible answers are found in this book. Introducing novel quantum devices such as atomic–scale electronic devices, ballistic devices, memristors, superconducting devices, this book also presents the reader with the physical principles underlying new ways of computing, as well as their practical implementation. Topics such as quantum computing, neuromorphic computing are highlighted here as some of the most promising candidates for ushering in a new era of atomic-scale electronics beyond CMOS.

Graphene and Emerging Materials for Post-CMOS Applications

Author : Yaw Obeng
Publisher : The Electrochemical Society
ISBN 13 : 1566777135
Total Pages : 421 pages
Book Rating : 4.5/5 (667 download)

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Book Synopsis Graphene and Emerging Materials for Post-CMOS Applications by : Yaw Obeng

Download or read book Graphene and Emerging Materials for Post-CMOS Applications written by Yaw Obeng and published by The Electrochemical Society. This book was released on 2009-05 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this symposium was to address all current and future issues related to ¿Emerging Materials For Post-CMOS Applications.¿ The symposium focused on fundamental material science, characterization and applications of emerging materials designed for alternatives technologies to replace CMOS. Special emphasis was placed on ¿Beyond CMOS¿ integration schemes, technology development and on the impact of non-traditional materials into nanoelectronics.

Beyond Si-Based CMOS Devices

Author : Sangeeta Singh
Publisher : Springer Nature
ISBN 13 : 981974623X
Total Pages : 331 pages
Book Rating : 4.8/5 (197 download)

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Book Synopsis Beyond Si-Based CMOS Devices by : Sangeeta Singh

Download or read book Beyond Si-Based CMOS Devices written by Sangeeta Singh and published by Springer Nature. This book was released on with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Graphene and Hexagonal Boron Nitride on Transition Metals and Their Application

Author : Thomas Brugger
Publisher :
ISBN 13 :
Total Pages : 90 pages
Book Rating : 4.:/5 (731 download)

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Book Synopsis Graphene and Hexagonal Boron Nitride on Transition Metals and Their Application by : Thomas Brugger

Download or read book Graphene and Hexagonal Boron Nitride on Transition Metals and Their Application written by Thomas Brugger and published by . This book was released on 2010 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Growth of Graphene/hexagonal Boron Nitride Heterostructures Using Molecular Beam Epitaxy

Author : Siamak Nakhaie
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (118 download)

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Book Synopsis Growth of Graphene/hexagonal Boron Nitride Heterostructures Using Molecular Beam Epitaxy by : Siamak Nakhaie

Download or read book Growth of Graphene/hexagonal Boron Nitride Heterostructures Using Molecular Beam Epitaxy written by Siamak Nakhaie and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Towards Angle-controlled Van Der Waals Heterostructures

Author : Lola Brown
Publisher :
ISBN 13 :
Total Pages : 350 pages
Book Rating : 4.:/5 (932 download)

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Book Synopsis Towards Angle-controlled Van Der Waals Heterostructures by : Lola Brown

Download or read book Towards Angle-controlled Van Der Waals Heterostructures written by Lola Brown and published by . This book was released on 2015 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional (2D) materials such as graphene exhibit a combination of unique electronic, mechanical, and optical properties that have drawn significant attention over the past decade. While there has been extensive investigation into individual 2D materials, the burgeoning field of 2D heterostructures offers an even richer array of desirable properties. This led to increasing efforts to controllably manipulate these materials and to tailor them toward potential applications. An important step toward the realization of functional 2D heterostructures is the fabrication and characterization of high quality bilayers with a uniform rotation angle ([theta]) between the constituent layers. The rotation angle represents a new degree of freedom capable of tuning both optical and electrical properties and is therefore a critical component in designing heterostructures for specific applications. In this thesis, we discuss the fabrication of bilayer graphene with a controlled rotation angle. To accomplish this, we first develop an application of transmission electron microscopy (TEM) capable of imaging the structure and atomic registry between graphene layers in bilayer and trilayer structures. We then introduce a new method for creating graphene and hexagonal boron nitride (h-BN) single layers with crystallographic alignment over large scales, and we characterize the structural and electronic uniformity of these films using a variety of techniques, including TEM, low-energy electron diffraction (LEED), and angle-resolved photoemission spectroscopy. We conclude by showing that these large-scale aligned films can be used as building blocks for 2D layered structures with a controllable rotation angle and uniform optical properties. These findings provide a framework for imaging and fabricating angle-controlled heterostructures that is extensible beyond graphene and hBN to a variety of 2D materials, thereby opening the door to a virtually limitless combination of 2D heterostructures with uniquely tailored properties.

Graphene, Carbon Nanotubes, and Nanostructures

Author : James Morris
Publisher :
ISBN 13 :
Total Pages : 364 pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Graphene, Carbon Nanotubes, and Nanostructures by : James Morris

Download or read book Graphene, Carbon Nanotubes, and Nanostructures written by James Morris and published by . This book was released on 2016 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphene, Carbon Nanotubes, and Nanostructures: Techniques and Applications offers a comprehensive review of groundbreaking research in nanofabrication technology and explores myriad applications that this technology has enabled. The book examines the historical evolution and emerging trends of nanofabrication and supplies an analytical understanding of some of the most important underlying nanofabrication technologies, with an emphasis on graphene, carbon nanotubes (CNTs), and nanowires. Featuring contributions by experts from academia and industry around the world, this book presents cutting-edge nanofabrication research in a wide range of areas. Topics include: CNT electrodynamics and signal propagation models Electronic structure calculations of a graphene-hexagonal boron nitride interface to aid the understanding of experimental devices based on these heterostructures How a laser field would modify the electronic structure and transport response of graphene, to generate bandgaps The fabrication of transparent CNT electrodes for organic light-emitting diodes Direct graphene growth on dielectric substrates, and potential applications in electronic and spintronic devices CNTs as a promising candidate for next-generation interconnect conductors CMOS-CNT integration approaches, including the promising localized heating CNT synthesis method CNTs in electrochemical and optical biosensors The synthesis of diamondoids by pulsed laser ablation plasmas generated in supercritical fluids, and possible applications The use of DNA nanostructures in lithography CMOS-compatible silicon nanowire biosensors The use of titanium oxide-B nanowires to detect explosive vapors The properties of protective layers on silver nanoparticles for ink-jet printing Nanostructured thin-film production using microreactors A one-stop reference for professionals, researchers, and graduate students working in nanofabrication, this book will also be useful for investors who want an overview of the current nanofabrication landscape.

Synthesis of Bilayer Graphene and Hexagonal Boron Nitride by Chemical Vapor Deposition Method

Author : Wenjing Fang (Ph. D.)
Publisher :
ISBN 13 :
Total Pages : 165 pages
Book Rating : 4.:/5 (953 download)

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Book Synopsis Synthesis of Bilayer Graphene and Hexagonal Boron Nitride by Chemical Vapor Deposition Method by : Wenjing Fang (Ph. D.)

Download or read book Synthesis of Bilayer Graphene and Hexagonal Boron Nitride by Chemical Vapor Deposition Method written by Wenjing Fang (Ph. D.) and published by . This book was released on 2016 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this thesis is two-fold: the first is to develop a reliable method for synthesizing bilayer graphene using chemical vapor deposition (CVD) method and to understand the growth mechanism. The second part involves exploring methods of synthesizing hexagonal boron nitride (hBN). The successful isolation of monolayer graphene in 2004 has attracted many researchers to search for potential applications of graphene and other two-dimensional materials in electronic and optical devices. However, the Scotch-tape method sets contraints for such applications due to the limited size and randomized location of obtained flakes. Thus, synthesizing large-area, high-quality two dimensional materials is highly desirable. This thesis seeks to develop a method to produce both bilayers and hBN with large area by CVD method and to investigate the underlying growth mechanisms for better control over the thickness, uniformity and stacking orientation.

Growth and Transfer of Graphene and Hexagonal Boron Nitride by Chemical Vapor Deposition

Author : Théo Levert
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Growth and Transfer of Graphene and Hexagonal Boron Nitride by Chemical Vapor Deposition by : Théo Levert

Download or read book Growth and Transfer of Graphene and Hexagonal Boron Nitride by Chemical Vapor Deposition written by Théo Levert and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A major challenge is to find a way to grow those materials in order to achieve an easy and economically attractive way to produce large area of those materials with a good quality. Another challenge is to transfer those materials on substrate compatible with electronics (mainly SiO2). We will focus the first part of our work on investigation of the growth conditions required to produce large area graphene and h-BN of good quality and their transfer on SiO2. Flexible electronics has become an important field of research for many applications, such as flexible batteries. In this goal, several materials have been used such as PEN, PET or polyimide (PI). All these materials present a good flexibility and a chemical compatibility with microelectronics process but they suffer from poor thermal conductivity, leading to lower utilization of power of devices deposited compared to classic microelectronic substrate such as SiO2. Several way have been recently investigated to bypass this problem and a good solution is to fill the matrix of the polymer or polyimide with nanomaterials or nanofillers. We choose to use graphene and h-BN as the filler in a 3D shape: a foam of graphene or h-BN as the nanofiller and we chose a PI as the matrix. In the second part, we will explain in details how we achieve novel flexible substrates with enhanced thermal properties. We succeed in producing polycrystalline graphene on copper with quite a good quality, fully covering the metallic substrate with a size of 2x2cm. We tried to grow monocrystalline graphene using standard CVD and achieved hexagonal single crystals of 30μm, which is quite small compared to other methods used in literature. We synthetized polycrystalline h-BN using copper as a catalyst and ammonia borane as the precursor with a size of 6x2cm with a good homogeneity on all available substrate. We were able to transfer both graphene an h-BN on Si02 substrate using both classical wet transfer and bubbling transfer, leading to a fastest transfer and resulting on clean transfer of our materials, free of cracks, bubbles and resist residues. We succeed in producing both 3D graphene and 3D h-BN as foam using a Nickel foam as the catalyst, resulting in multilayer graphene and h-BN with a good quality. We produced new flexible and thermal efficient substrates using these foams as a filler in a matrix of PI, already commonly used as a classical flexible substrate for microelectronics. We developed two generations of substrates. We found similar mechanical properties and thermal stability as the commercial Kapton. We deposited thermistors on the surface in order to study the thermal dissipation of our samples. We improved the maximum power applied on the thermistors up to 100% before breakdown.

Properties of Synthetic Two-Dimensional Materials and Heterostructures

Author : Yu-Chuan Lin
Publisher : Springer
ISBN 13 : 3030003329
Total Pages : 150 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Properties of Synthetic Two-Dimensional Materials and Heterostructures by : Yu-Chuan Lin

Download or read book Properties of Synthetic Two-Dimensional Materials and Heterostructures written by Yu-Chuan Lin and published by Springer. This book was released on 2018-10-23 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents a significant advance in our understanding of the synthesis and properties of two-dimensional (2D) materials. The author’s work breaks new ground in the understanding of a number of 2D crystals, including atomically thin transition metal dichalcogenides, graphene, and their heterostructures, that are technologically important to next-generation electronics. In addition to critical new results on the direct growth of 2D heterostructures, it also details growth mechanisms, surface science, and device applications of “epi-grade” 2D semiconductors, which are essential to low-power electronics, as well as for extending Moore’s law. Most importantly, it provides an effective alternative to mechanically exfoliate 2D layers for practical applications.

Beyond-CMOS

Author : Alessandro Cresti
Publisher : John Wiley & Sons
ISBN 13 : 1394228708
Total Pages : 453 pages
Book Rating : 4.3/5 (942 download)

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Book Synopsis Beyond-CMOS by : Alessandro Cresti

Download or read book Beyond-CMOS written by Alessandro Cresti and published by John Wiley & Sons. This book was released on 2023-07-19 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in physics, material sciences and technology have allowed the rise of new paradigms with bright prospects for digital electronics, going beyond the reach of Moore's law, which details the scaling limit of electronic devices in terms of size and power. This book presents original and innovative topics in the field of beyond CMOS electronics, ranging from steep slope devices and molecular electronics to spintronics, valleytronics, superconductivity and optical chips. Written by globally recognized leading research experts, each chapter of this book will provide an introductory overview of their topic and illustrate the state of the art and future challenges. Aimed not only at students and those new to this field, but also at well-experienced researchers, Beyond-CMOS provides extremely clear and exciting perspectives about the technology of tomorrow, and is thus an effective tool for understanding and developing new ideas, materials and architectures.

Superlattices and Quantum Spin Hall States in Graphene and Hexagonal Boron Nitride Heterostructures

Author : Javier Daniel Sanchez-Yamagishi
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (922 download)

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Book Synopsis Superlattices and Quantum Spin Hall States in Graphene and Hexagonal Boron Nitride Heterostructures by : Javier Daniel Sanchez-Yamagishi

Download or read book Superlattices and Quantum Spin Hall States in Graphene and Hexagonal Boron Nitride Heterostructures written by Javier Daniel Sanchez-Yamagishi and published by . This book was released on 2015 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional (2d) layered materials, such as graphene and hexagonal boron nitride (hBN), can be isolated separately and then stacked together to form heterostructures with crystalline interfaces between the layers. In this thesis, I present a series of experiments which explore the quantum transport of electrons in heterostructures made from graphene and hBN. Depending on the relative alignment, or "twist", between the layers, a crystal of hBN can be either a non-perturbing substrate for the graphene, or a method to induce a band gap and superlattice potential for the graphene electrons. In the case of two stacked graphene layers, a relative twist can electronically decouple the layers from each other, despite a tiny 0.34nm interlayer spacing. This twist-dependent physics can be used to realize new electronic states in graphene, especially in the presence of strong magnetic fields and electron-electron interactions. By applying a strong tilted magnetic field to graphene which is decoupled from its hBN substrate, we are able to realize a quantum spin Hall state and measure its electronic properties. An analogous bilayer quantum spin Hall state is also realized in twisted bilayer graphene, by taking advantage of the twist decoupling between the layers and the effects of electron-electron interactions. A different set of experiments explores the competition of a magnetic field with the effects of the superlattice potential which arises when a graphene sheet is nearly aligned to its hBN substrates. The large superlattice potential allows us to study graphene transport in Hofstadter's butterfly-the fractal spectrum for electrons under the simultaneous influence of a lattice and a magnetic field.

Electronic, Optical, and Phononic Properties of Graphene, Boron Nitride, and Related Materials

Author : CHEOL HWAN. PARK
Publisher :
ISBN 13 :
Total Pages : 442 pages
Book Rating : 4.:/5 (858 download)

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Book Synopsis Electronic, Optical, and Phononic Properties of Graphene, Boron Nitride, and Related Materials by : CHEOL HWAN. PARK

Download or read book Electronic, Optical, and Phononic Properties of Graphene, Boron Nitride, and Related Materials written by CHEOL HWAN. PARK and published by . This book was released on 2009 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the isolation of graphene, a single layer of carbon atoms in honeycomb structure, in 2004, this new material has gotten huge attention from communities in physics, chemistry, materials science, and engineering not only because the charge carriers of graphene show neutrino-like linear energy dispersion as well as chiral behavior near the Dirac point but also because graphene is considered to be a promising candidate for nano- and micro-scale electronic and spintronic device applications. On the other hand, a hexagonal sheet of boron nitride has a similar honeycomb-like structure, except that the two different sublattices are occupied by boron and nitrogen atoms, respectively. Notwithstanding its structural similarity to graphene, a hexagonal boron nitride sheet is an insulator with a large bandgap and is considered to be useful to optical applications such as ultra-violet lasers. In this work, we investigate the electronic, optical, and vibrational properties of graphene, hexagonal boron nitride, and related materials such as nanotubes or nanoribbons from first-principles calculations as well as from simple model considerations. In the first chapter, we briefly review the methodologies used in our work such as density functional theory, the GW approximation, the Bethe-Salpeter equation method, and density functional perturbation theory. In the following four chapters (2-5), we discuss the calculated spectral features of graphene and compare the results mainly with recent angle-resolved photoemission experiments. In our work, we have explicitly taken into account the effects of electron-electron and electron-phonon interactions from first-principles. Our calculations reproduce some of the key experimental observations related to many-body effects, including a mismatch between the upper and lower halves of the Dirac cone and the non-trivial energy dependence of carrier linewidths on the binding energy. The following three chapters (6-8) are on bilayer graphene. In chapters 6 and 7, we discuss the effects of many-body interactions on the dynamics of electrons and phonons in bilayer graphene, in similar ways as in chapters 2 to 5. We show that the interlayer interaction between the two graphene layers change electron-phonon and electron-electron interactions. In chapter 8, we discuss the excitons in biased bilayer graphene. We show that bound excitons qualitatively change the optical response of this novel material. In the following four chapters (9-12), we discuss the interesting behaviors of charge carriers in graphene subjected to an external periodic potential. For example, we show that the carrier group velocity is anisotropically reduced and that, under certain conditions, electrons can be supercollimated. We also discuss newly generated massless Dirac fermions in graphene superlattices as well as their signatures in quantum Hall conductance measurements. In chapter 13, we discuss the possibility of generating massless Dirac fermions in a conventional two-dimensional electron gas with an external periodic potential, i.e., a way of making artificial graphene. In the last four chapters, we discuss several different aspects of boron nitride compounds. In chapter 14, we present the calculated electronic energy bandgaps and effective masses of boron nitride nanoribbons and their changes in response to a transverse electric field. In chapters 15 and 16, we discuss excitons and optical response of boron nitride nanotubes and bulk hexagonal boron nitride, respectively. Finally, in the last chapter, we discuss a novel behavior of electric dipole moment reversal upon hydrogen passivation in boron nitride as well as other III-V or II-VI compound nanostructures.

Growth of Atomic Hexagonal Boron Nitride Layers and Graphene/hexagonal Boron Nitride Heterostructures by Molecular Beam Epitaxy

Author : Zhongguang Xu
Publisher :
ISBN 13 : 9781369656169
Total Pages : 98 pages
Book Rating : 4.6/5 (561 download)

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Book Synopsis Growth of Atomic Hexagonal Boron Nitride Layers and Graphene/hexagonal Boron Nitride Heterostructures by Molecular Beam Epitaxy by : Zhongguang Xu

Download or read book Growth of Atomic Hexagonal Boron Nitride Layers and Graphene/hexagonal Boron Nitride Heterostructures by Molecular Beam Epitaxy written by Zhongguang Xu and published by . This book was released on 2016 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following with the lateral growth of graphene on in situ epitaxial h-BN flakes by plasma-assisted MBE is discussed in Chapter 4. Single-crystal h-BN domains were grown on Co film substrates at a substrate temperature of 850~900 oC using plasma-assisted MBE. Three-point star shape h-BN domains were observed by SEM, and confirmed by Raman and XPS. The h-BN on Co template was used for in situ growth of multilayer graphene, leading to an h-BN/graphene heterostructure. Carbon atoms preferentially nucleate on Co substrate and edges of h-BN and then grow laterally to form continuous graphene. Further introduction of carbon atoms results in layer-by-layer growth of graphene on graphene and lateral growth of graphene on h-BN until it may cover entire h-BN flakes.