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Nitride Semiconductor Light Emitting Diodes Leds

Author: Jian-Jang Huang
Publisher: Woodhead Publishing
ISBN: 0081019432
Size: 64.19 MB
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Nitride Semiconductor Light-Emitting Diodes (LEDs): Materials, Technologies, and Applications, Second Edition reviews the fabrication, performance and applications of the technology, encompassing the state-of-the-art material and device development, along with considerations regarding nitride-based LED design. This updated edition is based on the latest research and advances, including two new chapters on LEDs for large displays and laser lighting. Chapters cover molecular beam epitaxy (MBE) growth of nitride semiconductors, modern metalorganic chemical vapor deposition (MOCVD) techniques, the growth of nitride-based materials, and gallium nitride (GaN)-on-sapphire and GaN-on-silicon technologies for LEDs. Nanostructured, non-polar and semi-polar nitride-based LEDs, as well as phosphor-coated nitride LEDs, are also discussed. The book also addresses the performance of nitride LEDs, including photonic crystal LEDs, surface plasmon enhanced LEDs, color tuneable LEDs, and LEDs based on quantum wells and quantum dots. Further chapters discuss the development of LED encapsulation technology and fundamental efficiency droop issues in gallium indium nitride (GaInN) LEDs. It is a technical resource for academics, physicists, materials scientists, electrical engineers, and those working in the lighting, consumer electronics, automotive, aviation, and communications sectors. Features new chapters on laser lighting, addressing the latest advances on this topic Reviews fabrication, performance, and applications of this technology that encompass the state-of-the-art material and device development Covers the performance of nitride LEDs, including photonic crystal LEDs, surface plasmon enhanced LEDs, color tuneable LEDs, and LEDs based on quantum wells and quantum dots Highlights applications of nitride LEDs, including liquid crystal display (LCD) backlighting, infra-red emitters, and automotive lighting Provides a comprehensive discussion of gallium nitride on both silicon and sapphire substrates

Rare Earth And Transition Metal Doping Of Semiconductor Materials

Author: Volkmar Dierolf
Publisher: Woodhead Publishing
ISBN: 008100060X
Size: 69.10 MB
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Rare Earth and Transition Metal Doping of Semiconductor Material explores traditional semiconductor devices that are based on control of the electron’s electric charge. This book looks at the semiconductor materials used for spintronics applications, in particular focusing on wide band-gap semiconductors doped with transition metals and rare earths. These materials are of particular commercial interest because their spin can be controlled at room temperature, a clear opposition to the most previous research on Gallium Arsenide, which allowed for control of spins at supercold temperatures. Part One of the book explains the theory of magnetism in semiconductors, while Part Two covers the growth of semiconductors for spintronics. Finally, Part Three looks at the characterization and properties of semiconductors for spintronics, with Part Four exploring the devices and the future direction of spintronics. Examines materials which are of commercial interest for producing smaller, faster, and more power-efficient computers and other devices Analyzes the theory behind magnetism in semiconductors and the growth of semiconductors for spintronics Details the properties of semiconductors for spintronics

Polymer Optical Fibres

Author: Christian-Alexander Bunge
Publisher: Woodhead Publishing
ISBN: 0081000561
Size: 63.71 MB
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Polymer Optical Fibres: Fibre Types, Materials, Fabrication, Characterization, and Applications explores polymer optical fibers, specifically their materials, fabrication, characterization, measurement techniques, and applications. Optical effects, including light propagation, degrading effects of attenuation, scattering, and dispersion, are explained. Other important parameters like mechanical strength, operating temperatures, and processability are also described. Polymer optical fibers (POF) have a number of advantages over glass fibers, such as low cost, flexibility, low weight, electromagnetic immunity, good bandwidth, simple installation, and mechanical stability. Provides systematic and comprehensive coverage of materials, fabrication, properties, measurement techniques, and applications of POF Focuses on industry needs in communication, illumination and sensors, the automotive industry, and medical and biotechnology Features input from leading experts in POF technology, with experience spanning optoelectronics, polymer, and textiles Explains optical effects, including light propagation, degrading effects of attenuation, scattering, and dispersion

Materials Characterization Using Nondestructive Evaluation Nde Methods

Author: Gerhard Huebschen
Publisher: Woodhead Publishing
ISBN: 008100057X
Size: 33.35 MB
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Materials Characterization Using Nondestructive Evaluation (NDE) Methods discusses NDT methods and how they are highly desirable for both long-term monitoring and short-term assessment of materials, providing crucial early warning that the fatigue life of a material has elapsed, thus helping to prevent service failures. Materials Characterization Using Nondestructive Evaluation (NDE) Methods gives an overview of established and new NDT techniques for the characterization of materials, with a focus on materials used in the automotive, aerospace, power plants, and infrastructure construction industries. Each chapter focuses on a different NDT technique and indicates the potential of the method by selected examples of applications. Methods covered include scanning and transmission electron microscopy, X-ray microtomography and diffraction, ultrasonic, electromagnetic, microwave, and hybrid techniques. The authors review both the determination of microstructure properties, including phase content and grain size, and the determination of mechanical properties, such as hardness, toughness, yield strength, texture, and residual stress. Gives an overview of established and new NDT techniques, including scanning and transmission electron microscopy, X-ray microtomography and diffraction, ultrasonic, electromagnetic, microwave, and hybrid techniques Reviews the determination of microstructural and mechanical properties Focuses on materials used in the automotive, aerospace, power plants, and infrastructure construction industries Serves as a highly desirable resource for both long-term monitoring and short-term assessment of materials

Materialien Und Systeme

Author: Uwe Hartmann
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3486855425
Size: 54.62 MB
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Volume 2 of this four-part textbook is devoted to the full range of materials relevant to nanostructural research and nanotechnology. These materials encompass soft condensed matter, including biological matter, along with nano-scale building blocks in the form of monolayer films, nanotubes, clusters, and biological machines.

Hochspannungstechnik

Author: Andreas Küchler
Publisher: Springer-Verlag
ISBN: 3662547007
Size: 27.89 MB
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Hochspannungstechnik ist nicht nur eine Schlüsseltechnologie für die sichere, wirtschaftliche und umweltfreundliche Energieversorgung, sie kommt auch in den meisten innovativen Technikfeldern wie z. B. der Medizintechnik zur Anwendung. Das Lehrbuch verbindet theoretische Grundlagen mit modernen Technologien und ihren Anwendungen und illustriert die Zusammenhänge anhand von Bildern und Beispielen. Die 3. Auflage berücksichtigt die Herausforderungen, die der Ausbau der Energieversorgungsinfrastruktur in großen Schwellenländern derzeit mit sich bringt.

Physikalische Metallkunde

Author: P. Haasen
Publisher: Springer-Verlag
ISBN: 3662127024
Size: 37.40 MB
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Seit 1959 versuche ich in Göttingen, Studierende der Physik nach dem V 01' examen für ein Aufbaustudium der Physikalischen Metallkunde zu interessieren. Diese Aufgabe stellt sich heute an vielen Hochschulen, denn allgemein hat sich der Beruf des Metallkundlers in der Forschung, der Entwicklung metallischer Werkstoffe und ihrer industriellen Produktion als sehr befriedigend und aus sichtsreich erwiesen. Nicht nur ist die Metall-Technik außerordentlich vielseitig und lädt zu wissenschaftlicher Durchdringung ein, sondern auch andere Bereiche der Festkörper-verarbeitenden Industrie benutzen unter der Überschrift" Werk stoffwissenschaften" (Materials Science) zunehmend metallkundliche Methoden, etwa bei keramischen Werkstoffen, Halbleitermaterialien, Kunststoffen usw. Für ein solches Berufsbild ist heute ein Grundstudium der Physik sehr geeignet, während Metallkundler früherer Jahrgänge häufig als Chemiker oder Maschinen bau-Ingenieure begonnen haben. Das Grundstudium der Physik bietet neben strengem mathematischen Rüstzeug verschiedene Vorlesungen und Praktika der Experimentalphysik sowie den theoretisch-physikalischen Kursus incl. der Quantentheorie. Im 5. und 6. Semester leiten Einführungsvorlesungen über Festkörperphysik in das Gebiet der Physikalischen Metallkunde über. Sie lehnen sich auch in Deutschland häufig an das Lehrbuch von Ch. Kittel [1.1] an.

Grundlagen Der Photonik

Author: Bahaa E. A. Saleh
Publisher: John Wiley & Sons
ISBN: 9783527406777
Size: 23.58 MB
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Schon die erste Auflage des englischen Lehrbuchs 'Fundamentals of Photonics' zeichnete sich durch seine ausgewogene Mischung von Theorie und Praxis aus, und deckte in detaillierter Darstellung die grundlegenden Theorien des Lichts ab. Es umfasste sowohl die Themen Strahlenoptik, Wellenoptik, elektromagnetische Optik, Photonenoptik, sowie die Wechselwirkung von Licht und Materie, als auch die Theorie der optischen Eigenschaften von Halbleitern. Die Photonik-Technologie hat eine rasante Entwicklung genommen seit der Publikation der ersten Ausgabe von 'Fundamentals of Photonics' vor 15 Jahren. Die nun vorliegende Zweite Auflage des Marksteins auf dem Gebiet der Photonik trägt mit zwei neuen und zusätzlichen Kapiteln den neuesten technologischen Fortschritten Rechnung: Photonische Kristalle sowie Ultrakurzpuls-Optik. Zudem wurden alle Kapitel gründlich überarbeitet und viele Abschnitte hinzugefügt, so z.B. über Laguerre-Gauss Strahlen, die Sellmeier-Gleichung, Photonenkristall-Wellenleiter, photonische Kristallfasern, Mikrosphären-Resonatoren, Optische Kohärenz Tomographie, Bahndrehimpuls des Photons, Bohrsche Theorie, Raman-Verstärker, rauscharme Avalanche-Photodioden, Abstimmkurven und Dispersions-Management.