Molecular Beam Epitaxial Growth and Characterization of GaAs and GaAsBi Based Semiconductor Devices

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (129 download)

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Book Synopsis Molecular Beam Epitaxial Growth and Characterization of GaAs and GaAsBi Based Semiconductor Devices by : Mahsa Mahtab

Download or read book Molecular Beam Epitaxial Growth and Characterization of GaAs and GaAsBi Based Semiconductor Devices written by Mahsa Mahtab and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: GaAs(1-x)Bi(x) (x = 0 to 17%) optical properties were investigated by spectroscopic ellipsometry (in energy ranges of 0.37-9.0 eV). Optical features in the dielectric function, known as the critical points, were distinguished and modeled using standard analytic line shapes. The energy dependence of the critical points energies was thoroughly investigated as a function of Bi content and thin film strain. Critical points analysis in the Brillion zone showed that the top of the valence band is most strongly dependent on Bi content compared to other parts of the band structure. In addition, an interesting new critical point was observed that is attributed to alternative allowed optical transitions made possible by changes to the top of the valence band caused by resonant interactions with Bi orbitals. Several of the critical points were extrapolated to 100% Bi and showed reasonable agreement with the calculated band structure of GaBi. GaAs(1-x)Bi(x) (x= 03, 0.7 and 1.1%) based p+/n and n+/p heterostructure photovoltaic performance was characterized through IV and CV measurement. By introduction of Bi into GaAs, a non-zero EQE below the GaAs band edge energy was observed while the highest efficiency was obtained by ~ 0.7% Bi incorporation. EQE spectrum was modeled to find the minority carrier diffusion lengths of ~ Ln = 1600 and Lp = 140 nm for p-doped and n-doped GaAs92Bi08 in the doping profile of 10^15 - 10^16 cm^-3. Analysis of the CV measurement confirmed the background n-doping effect of Bi atom and the essential role of the cap layer to reduce multi-level recombination mechanisms at the cell edge to improve ideality factor. Low temperature grown GaAs was optimized to be used as photoconductive antenna in THz time-domain spectroscopy setup. The As content was investigated to optimize photo-carrier generation using 1550 nm laser excitation while maintaining high mobility and resistivity required for optical switching. A barrier layer of AlAs was added below the LT-GaAs to limit carrier diffusion into the GaAs substrate. Moreover, LT-GaAs layer thickness and post-growth annealing condition was optimized. The optimized structure (2-μm LT-GaAs on 60-nm AlAs, under As2:Ga BEP of ~7, annealed at 550°C for 1 minute) outperformed a commercial InGaAs antenna by a factor of 15 with 4.5 THz bandwidth and 75 dB signal-to-noise ratio at 1550 nm wavelength.

Molecular Beam Epitaxy

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Publisher : OUP Oxford
ISBN 13 : 0191061166
Total Pages : 529 pages
Book Rating : 4.1/5 (91 download)

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Book Synopsis Molecular Beam Epitaxy by : John Orton

Download or read book Molecular Beam Epitaxy written by John Orton and published by OUP Oxford. This book was released on 2015-06-25 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a history of Molecular Beam Epitaxy (MBE) as applied to the growth of semiconductor thin films (note that it does not cover the subject of metal thin films). It begins by examining the origins of MBE, first of all looking at the nature of molecular beams and considering their application to fundamental physics, to the development of nuclear magnetic resonance and to the invention of the microwave MASER. It shows how molecular beams of silane (SiH4) were used to study the nucleation of silicon films on a silicon substrate and how such studies were extended to compound semiconductors such as GaAs. From such surface studies in ultra-high vacuum the technique developed into a method of growing high quality single crystal films of a wide range of semiconductors. Comparing this with earlier evaporation methods of deposition and with other epitaxial deposition methods such as liquid phase and vapour phase epitaxy (LPE and VPE). The text describes the development of MBE machines from the early âhome-madeâ variety to that of commercial equipment and show how MBE was gradually refined to produce high quality films with atomic dimensions. This was much aided by the use of various in-situ surface analysis techniques, such as reflection high energy electron diffraction (RHEED) and mass spectrometry, a feature unique to MBE. It looks at various modified versions of the basic MBE process, then proceed to describe their application to the growth of so-called âlow-dimensional structuresâ (LDS) based on ultra-thin heterostructure films with thickness of order a few molecular monolayers. Further chapters cover the growth of a wide range of different compounds and describe their application to fundamental physics and to the fabrication of electronic and opto-electronic devices. The authors study the historical development of all these aspects and emphasise both the (often unexpected) manner of their discovery and development and the unique features which MBE brings to the growth of extremely complex structures with monolayer accuracy.

Molecular Beam Epitaxy

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Publisher : Elsevier
ISBN 13 : 0815518404
Total Pages : 795 pages
Book Rating : 4.8/5 (155 download)

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Book Synopsis Molecular Beam Epitaxy by : Robin F.C. Farrow

Download or read book Molecular Beam Epitaxy written by Robin F.C. Farrow and published by Elsevier. This book was released on 1995-12-31 with total page 795 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume, the editor and contributors describe the use of molecular beam epitaxy (MBE) for a range of key materials systems that are of interest for both technological and fundamental reasons. Prior books on MBE have provided an introduction to the basic concepts and techniques of MBE and emphasize growth and characterization of GaAs-based structures. The aim in this book is somewhat different; it is to demonstrate the versatility of the technique by showing how it can be utilized to prepare and explore a range of distinct and diverse materials. For each of these materials systems MBE has played a key role both in their development and application to devices.

Gas-source Molecular Beam Epitaxial Growth and Characterization of the (Al, In, Ga)NP/GaP Material System and Its Applications to Light-emitting Diodes

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ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (82 download)

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Book Synopsis Gas-source Molecular Beam Epitaxial Growth and Characterization of the (Al, In, Ga)NP/GaP Material System and Its Applications to Light-emitting Diodes by : Vladimir Odnoblyudov

Download or read book Gas-source Molecular Beam Epitaxial Growth and Characterization of the (Al, In, Ga)NP/GaP Material System and Its Applications to Light-emitting Diodes written by Vladimir Odnoblyudov and published by . This book was released on 2006 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen incorporation into GaAs has received much attention in the last decade, because of its application to long-wavelength lasers. However, nitrogen incorporation into GaP (100) has not received much attention to date despite the promising application of this material system to yellow-amber-red light-emitting diodes. In order to investigate the not yet well-studied (Al, In, Ga)NP material system, we use gas-source molecular beam (MBE), in which nitrogen radicals are used as nitrogen precursor, to grow these mixed group-V alloy semiconductors with excellent crystallinity. This dissertation is divided into two major parts. In the first part we describe the growth and characterization of the (Al, In, Ga)NP material system. Optical and structural properties of GaNP bulk layers, AlGaNP bulk layers, and InGaNP quantum wells are studied. The dependence of the GaNP band gap vs. nitrogen concentration and temperature dependent PL are analyzed. For AlGaNP layers, using a thermodynamic approach we explain the difference between nitrogen incorporation into GaP and AlP. The dependence of the emission wavelength vs. nitrogen and indium compositions is studied for InGaNP QWs. The electron effective mass is determined for InGaNP materials with different indium concentration. The conduction and valence band offsets are calculated for the InGaNP/GaP heterojunction. In the second part, we describe LED chip fabrication and contacts optimization. development of n-type and p-type contacts is discussed. A description of LED chip processing optimization is given for a p-i-n diode structure. The band offsets are compared for (Al, In, Ga)NP-based LED structures and conventional AlInGaP-based LED structures; they are 2-3 times higher in LEDs based on the (Al, In, Ga)NP material system. Growth and fabrication results for bulk GaNP-based amber LEDs are discussed. Color stability (electroluminescence peak wavelength shift vs. current) is compared for GaNPbased LEDs and AlInGaP-based LEDs; the wavelength shift of (Al, In, Ga)NP-based LED chips is ~ 6 times less than that of AlInGaP-based LED chips, in the drive current range of 10 - 60 mA. The influence of In concentration in InGaNP QWs on EL properties of LED chips is reported. Single and multiple InGaNP QW-based LEDs are studied.

Molecular Beam Epitaxy

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Publisher : Elsevier
ISBN 13 : 0128121378
Total Pages : 790 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Molecular Beam Epitaxy by : Mohamed Henini

Download or read book Molecular Beam Epitaxy written by Mohamed Henini and published by Elsevier. This book was released on 2018-06-27 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Beam Epitaxy (MBE): From Research to Mass Production, Second Edition, provides a comprehensive overview of the latest MBE research and applications in epitaxial growth, along with a detailed discussion and ‘how to’ on processing molecular or atomic beams that occur on the surface of a heated crystalline substrate in a vacuum. The techniques addressed in the book can be deployed wherever precise thin-film devices with enhanced and unique properties for computing, optics or photonics are required. It includes new semiconductor materials, new device structures that are commercially available, and many that are at the advanced research stage. This second edition covers the advances made by MBE, both in research and in the mass production of electronic and optoelectronic devices. Enhancements include new chapters on MBE growth of 2D materials, Si-Ge materials, AIN and GaN materials, and hybrid ferromagnet and semiconductor structures. Condenses the fundamental science of MBE into a modern reference, speeding up literature review Discusses new materials, novel applications and new device structures, grounding current commercial applications with modern understanding in industry and research Includes coverage of MBE as mass production epitaxial technology and how it enhances processing efficiency and throughput for the semiconductor industry and nanostructured semiconductor materials research community

Growth and Characterization of In(1-x)Ga(x)As(y)P(1-y) and GaAs Using Molecular Beam Epitaxy

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ISBN 13 :
Total Pages : 129 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Growth and Characterization of In(1-x)Ga(x)As(y)P(1-y) and GaAs Using Molecular Beam Epitaxy by : D. W. Covington

Download or read book Growth and Characterization of In(1-x)Ga(x)As(y)P(1-y) and GaAs Using Molecular Beam Epitaxy written by D. W. Covington and published by . This book was released on 1980 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the technical work accomplished during the first year of a two-year study of binary and quaternary semiconductors grown by molecular beam epitaxy. Research on GaAs materials demonstrated doping profiles for peeled film, mixer diodes and low-high-low, millimeter wave IMPATT diodes. Iron has been investigated as a potential MBE dopant for FET buffer layer applications. Although compensated layers exhibiting the Fe(2+) line at 0.371 eV were obtained for doping oven temperatures less than but close to 1013 C at GaAs growth rates of 1.0 micron per hr. there was unintentional accumulation of iron at the outer surface reserved for the active layer in conventional FET structures. Before initiating the study of quaternary materials, the MBE growth conditions were established for the ternary In(x)Ga(1-x)As. Layers of the latter semiconductor grown on GaAs substrates held at 510 C showed significant changes in surface morphology and electrical properties for x greater than but close to 0.3. A cryopumped MBE system containing six oven positions has been developed for growing the quaternary In(1-x)Ga(x)As(y)P(1-y) which requires relatively intense beams of P molecules. Lattice-matched In(1-x)Ga(x)As(y)P(1-y) layers have been deposited in this system on (001) GaAs substrates using ovens loaded with Ga, In, As, and GaP. Epitaxy was achieved.

Molecular Beam Epitaxy Growth and Characterization of ZnO-based Layers and Heterostructures

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Publisher : Cuvillier Verlag
ISBN 13 : 386727701X
Total Pages : 143 pages
Book Rating : 4.8/5 (672 download)

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Book Synopsis Molecular Beam Epitaxy Growth and Characterization of ZnO-based Layers and Heterostructures by : Abdelhamid Abdelrehim Mahmoud Elshaer

Download or read book Molecular Beam Epitaxy Growth and Characterization of ZnO-based Layers and Heterostructures written by Abdelhamid Abdelrehim Mahmoud Elshaer and published by Cuvillier Verlag. This book was released on 2008 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Gas Source Molecular Beam Epitaxy

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Publisher : Springer Science & Business Media
ISBN 13 : 3642781276
Total Pages : 441 pages
Book Rating : 4.6/5 (427 download)

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Book Synopsis Gas Source Molecular Beam Epitaxy by : Morton B. Panish

Download or read book Gas Source Molecular Beam Epitaxy written by Morton B. Panish and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book to present a unified treatment of hybrid source MBE and metalorganic MBE. Since metalorganic MBE permits selective area growth, the latest information on its application to the INP/GaInAs(P) system is presented. This system has been highlighted because it is one of rising importance, vital to optical communications systems, and has great potential for future ultra-highspeed electronics. The use of such analytical methods as high resolution x-ray diffraction, secondary ion mass spectroscopy, several photoluminescence methods, and the use of active devices for materials evaluation is shown in detail.

Molecular Beam Epitaxy

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Publisher : Elsevier
ISBN 13 : 1483155331
Total Pages : 181 pages
Book Rating : 4.4/5 (831 download)

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Book Synopsis Molecular Beam Epitaxy by : Brian R. Pamplin

Download or read book Molecular Beam Epitaxy written by Brian R. Pamplin and published by Elsevier. This book was released on 2017-08-31 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Beam Epitaxy introduces the reader to the use of molecular beam epitaxy (MBE) in the generation of III-V and IV-VI compounds and alloys and describes the semiconductor and integrated optics reasons for using the technique. Topics covered include semiconductor superlattices by MBE; design considerations for MBE systems; periodic doping structure in gallium arsenide (GaAs); nonstoichiometry and carrier concentration control in MBE of compound semiconductors; and MBE techniques for IV-VI optoelectronic devices. The use of MBE to fabricate integrated optical devices and to study semiconductor surface and crystal physics is also considered. This book is comprised of eight chapters and opens with an overview of MBE as a crystal growth technique. The discussion then turns to the deposition of semiconductor superlattices of GaAs by MBE; important factors that must be considered in the design of a MBE system such as flux uniformity, crucible volume, heat shielding, source baffling, and shutters; and control of stoichiometry deviation in MBE growth of compound semiconductors, along with the effects of such deviation on the electronic properties of the grown films. The following chapters focus on the use of MBE techniques for growth of IV-VI optoelectronic devices; for fabrication of integrated optical devices; and for the study of semiconductor surface and crystal physics. The final chapter examines a superlattice consisting of a periodic sequence of ultrathin p- and n-doped semiconductor layers, possibly with intrinsic layers in between. This monograph will be of interest to chemists, physicists, and crystallographers.

Molecular Beam Epitaxy and Heterostructures

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Publisher : Springer Science & Business Media
ISBN 13 : 940095073X
Total Pages : 718 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Molecular Beam Epitaxy and Heterostructures by : L.L. Chang

Download or read book Molecular Beam Epitaxy and Heterostructures written by L.L. Chang and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NATO Advanced Study Institute on "Molecular Beam Epitaxy (MBE) and Heterostructures" was held at the Ettore Majorana Center for Scientific Culture, Erice, Italy, on March 7-19, 1983, the second course of the International School of Solid-State Device Re search. This volume contains the lectures presented at the Institute. Throughout the history of semiconductor development, the coupling between processing techniques and device structures for both scientific investigations and technological applications has time and again been demonstrated. Newly conceived ideas usually demand the ultimate in existing techniques, which often leads to process innova tions. The emergence of a process, on the other hand, invariably creates opportunities for device improvement and invention. This intimate relationship between the two has most recently been witnessed in MBE and heterostructures, the subject of this Institute. This volume is divided into several sections. Chapter 1 serves as an introduction by providing a perspective of the subject. This is followed by two sections, each containing four chapters, Chapters 2-5 addressing the principles of the MBE process and Chapters 6-9 describ ing its use in the growth of a variety of semiconductors and heteros tructures. The next two sections, Chapters to-II and Chapters 12-15, treat the theory and the electronic properties of the heterostructures, respectively. The focus is on energy quantization of the two dimensional electron system. Chapters 16-17 are devoted to device structures, including both field-effect transistors and lasers and detec tors.

Growth and Defect Characterization of Low Temperature Molecular Beam Epitaxy GaAs

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ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (34 download)

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Book Synopsis Growth and Defect Characterization of Low Temperature Molecular Beam Epitaxy GaAs by : Ri-an Zhao

Download or read book Growth and Defect Characterization of Low Temperature Molecular Beam Epitaxy GaAs written by Ri-an Zhao and published by . This book was released on 2002 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Molecular Beam Epitaxial Growth and Characterization of GaAs/AlGaAs Thin Films and Multilayer Structures

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Publisher :
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.:/5 (833 download)

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Book Synopsis Molecular Beam Epitaxial Growth and Characterization of GaAs/AlGaAs Thin Films and Multilayer Structures by : Yuh-Haw Wu

Download or read book Molecular Beam Epitaxial Growth and Characterization of GaAs/AlGaAs Thin Films and Multilayer Structures written by Yuh-Haw Wu and published by . This book was released on 1984 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Silicon Molecular Beam Epitaxy

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Publisher : CRC Press
ISBN 13 : 1351085077
Total Pages : 306 pages
Book Rating : 4.3/5 (51 download)

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Book Synopsis Silicon Molecular Beam Epitaxy by : E. Kasper

Download or read book Silicon Molecular Beam Epitaxy written by E. Kasper and published by CRC Press. This book was released on 2018-05-04 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This subject is divided into two volumes. Volume I is on homoepitaxy with the necessary systems, techniques, and models for growth and dopant incorporation. Three chapters on homoepitaxy are followed by two chapters describing the different ways in which MBE may be applied to create insulator/Si stackings which may be used for three-dimensional circuits. The two remaining chapters in Volume I are devoted to device applications. The first three chapters of Volume II treat all aspects of heteroepitaxy with the exception of the epitaxial insulator/Si structures already treated in volume I.

Epitaxial Growth and Characterization of Narrow Bandgap III-V Semiconductors and Related Semimetals

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ISBN 13 :
Total Pages : 246 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Epitaxial Growth and Characterization of Narrow Bandgap III-V Semiconductors and Related Semimetals by : Sukgeun Choi

Download or read book Epitaxial Growth and Characterization of Narrow Bandgap III-V Semiconductors and Related Semimetals written by Sukgeun Choi and published by . This book was released on 2006 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Successful Molecular Beam Epitaxy Growth and Characterization of (110) GaAs/GaAs and (110) AlGaAs/GaAs

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ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (29 download)

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Book Synopsis Successful Molecular Beam Epitaxy Growth and Characterization of (110) GaAs/GaAs and (110) AlGaAs/GaAs by : Lisa Parechanian Allen

Download or read book Successful Molecular Beam Epitaxy Growth and Characterization of (110) GaAs/GaAs and (110) AlGaAs/GaAs written by Lisa Parechanian Allen and published by . This book was released on 1987 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Molecular Beam Epitaxy Growth and Characterization of Beryllium-based II-VI Semiconductor Materials and Distributed Bragg Reflectors for Potential Application in Visible Light Emitters

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ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.:/5 (112 download)

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Book Synopsis Molecular Beam Epitaxy Growth and Characterization of Beryllium-based II-VI Semiconductor Materials and Distributed Bragg Reflectors for Potential Application in Visible Light Emitters by : Oleg Maksimov

Download or read book Molecular Beam Epitaxy Growth and Characterization of Beryllium-based II-VI Semiconductor Materials and Distributed Bragg Reflectors for Potential Application in Visible Light Emitters written by Oleg Maksimov and published by . This book was released on 2002 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

GaAs High-Speed Devices

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Publisher : John Wiley & Sons
ISBN 13 : 047185641X
Total Pages : 642 pages
Book Rating : 4.4/5 (718 download)

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Book Synopsis GaAs High-Speed Devices by : C. Y. Chang

Download or read book GaAs High-Speed Devices written by C. Y. Chang and published by John Wiley & Sons. This book was released on 1994-10-28 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of high-speed semiconductor devices—the genius driving digital computers, advanced electronic systems for digital signal processing, telecommunication systems, and optoelectronics—is inextricably linked to the unique physical and electrical properties of gallium arsenide. Once viewed as a novel alternative to silicon, gallium arsenide has swiftly moved into the forefront of the leading high-tech industries as an irreplaceable material in component fabrication. GaAs High-Speed Devices provides a comprehensive, state-of-the-science look at the phenomenally expansive range of engineering devices gallium arsenide has made possible—as well as the fabrication methods, operating principles, device models, novel device designs, and the material properties and physics of GaAs that are so keenly integral to their success. In a clear five-part format, the book systematically examines each of these aspects of GaAs device technology, forming the first authoritative study to consider so many important aspects at once and in such detail. Beginning with chapter 2 of part one, the book discusses such basic subjects as gallium arsenide materials and crystal properties, electron energy band structures, hole and electron transport, crystal growth of GaAs from the melt and defect density analysis. Part two describes the fabrication process of gallium arsenide devices and integrated circuits, shedding light, in chapter 3, on epitaxial growth processes, molecular beam epitaxy, and metal organic chemical vapor deposition techniques. Chapter 4 provides an introduction to wafer cleaning techniques and environment control, wet etching methods and chemicals, and dry etching systems, including reactive ion etching, focused ion beam, and laser assisted methods. Chapter 5 provides a clear overview of photolithography and nonoptical lithography techniques that include electron beam, x-ray, and ion beam lithography systems. The advances in fabrication techniques described in previous chapters necessitate an examination of low-dimension device physics, which is carried on in detail in chapter 6 of part three. Part four includes a discussion of innovative device design and operating principles which deepens and elaborates the ideas introduced in chapter 1. Key areas such as metal-semiconductor contact systems, Schottky Barrier and ohmic contact formation and reliability studies are examined in chapter 7. A detailed discussion of metal semiconductor field-effect transistors, the fabrication technology, and models and parameter extraction for device analyses occurs in chapter 8. The fifth part of the book progresses to an up-to-date discussion of heterostructure field-effect (HEMT in chapter 9), potential-effect (HBT in chapter 10), and quantum-effect devices (chapters 11 and 12), all of which are certain to have a major impact on high-speed integrated circuits and optoelectronic integrated circuit (OEIC) applications. Every facet of GaAs device technology is placed firmly in a historical context, allowing readers to see instantly the significant developmental changes that have shaped it. Featuring a look at devices still under development and device structures not yet found in the literature, GaAs High-Speed Devices also provides a valuable glimpse into the newest innovations at the center of the latest GaAs technology. An essential text for electrical engineers, materials scientists, physicists, and students, GaAs High-Speed Devices offers the first comprehensive and up-to-date look at these formidable 21st century tools. The unique physical and electrical properties of gallium arsenide has revolutionized the hardware essential to digital computers, advanced electronic systems for digital signal processing, telecommunication systems, and optoelectronics. GaAs High-Speed Devices provides the first fully comprehensive look at the enormous range of engineering devices gallium arsenide has made possible as well as the backbone of the technology—ication methods, operating principles, and the materials properties and physics of GaAs—device models and novel device designs. Featuring a clear, six-part format, the book covers: GaAs materials and crystal properties Fabrication processes of GaAs devices and integrated circuits Electron beam, x-ray, and ion beam lithography systems Metal-semiconductor contact systems Heterostructure field-effect, potential-effect, and quantum-effect devices GaAs Microwave Monolithic Integrated Circuits and Digital Integrated Circuits In addition, this comprehensive volume places every facet of the technology in an historical context and gives readers an unusual glimpse at devices still under development and device structures not yet found in the literature.