Electroluminescence I

Electroluminescence I PDF Author:
Publisher: Academic Press
ISBN: 0080864627
Category : Science
Languages : en
Pages : 353

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Book Description
The volume "Electroluminescence" for the first time covers (almost) all kinds of electroluminescence. In its broadest sense electroluminescence is the conversion of electric power into optical power - light. The way, in which this goal is accomplished, and the goal, the application itself, has varied over time. First reported in the scientific literature in 1936 by the French physicist G. Destriau, it was for quite some decades the glow of a powder embedded in a resin under the action of an alternating voltage. The dream of "cold light" for illumination was born in the 50s. Modern semiconductor technology, using p-n juntion, but not in silicon or germanium, but in GaAs and GaP, created in the 70s the tiny Light emitting Diodes. Today about 50 for every human being have been sold. They are everywhere for signaling and display of numbers and short texts. And they are at the verge of an era of solid state lighting, replacing gradually incandescent bulbs and fluorescent lamps. In the first half of 1999 several joint ventures between giants of the lighting industry and manufacturers of LEDs became known, including names as Philips, General Electric, Osram and Hewlett Packard, Emtron and Siemens, The reason, blue light emission of LEDs, for so long researched for unsuccessfully, has been achieved.Signaling, lighting will be the domains of LEDs in the next decades - a good start in the 21st millenium. But a the same time a paradigm shift in the display industry could come about. Dominated for the last 10 years by Liquid Crystal Displays (LCD), which are reflecting or transmitting light from extra light sources, self-emitting displays will challenge this dominance. Capable of handling very complex information by multiplexed addressing of millions of picture elements (pixels) in full color electroluminescence in the form of Organic LEDs and Thin Film Electroluminescence is gaining markets. Both technologies, much less matured than LED, incorporate much different physical features. The broad materials potential almost unexplored in both cases, they are good for surprises.The volume tries to present overviews ovber the 3 different technologies, covering in each case the mechanisms, the most important material properties, essential for the implementation of the working principles, the major applications and the system aspects. The reader will learn how the new long-life, maintenance free, power saving red traffic lights in the Silicon Valley function, and what the tail lights of his next car will be. The fascinating physics of polymer light emitters, eventually manufactured in a roll-to roll process, for cellular phones, or hand-held wireless computers, will become transparent. And why is it that up to now only sulfides can be used for the simplest design of displays capable of proven multiplex ratios of 1000? The comparison of the different electroluminescences, if this plural exists, will hopefully give experts of one of the fields, students of any of them, and application engineers new insights and ideas. Materials scientists and engineers will be caught by the comparison in analyzing what else one could provide to improve performance.

Electroluminescence I

Electroluminescence I PDF Author:
Publisher: Academic Press
ISBN: 0080864627
Category : Science
Languages : en
Pages : 353

Get Book Here

Book Description
The volume "Electroluminescence" for the first time covers (almost) all kinds of electroluminescence. In its broadest sense electroluminescence is the conversion of electric power into optical power - light. The way, in which this goal is accomplished, and the goal, the application itself, has varied over time. First reported in the scientific literature in 1936 by the French physicist G. Destriau, it was for quite some decades the glow of a powder embedded in a resin under the action of an alternating voltage. The dream of "cold light" for illumination was born in the 50s. Modern semiconductor technology, using p-n juntion, but not in silicon or germanium, but in GaAs and GaP, created in the 70s the tiny Light emitting Diodes. Today about 50 for every human being have been sold. They are everywhere for signaling and display of numbers and short texts. And they are at the verge of an era of solid state lighting, replacing gradually incandescent bulbs and fluorescent lamps. In the first half of 1999 several joint ventures between giants of the lighting industry and manufacturers of LEDs became known, including names as Philips, General Electric, Osram and Hewlett Packard, Emtron and Siemens, The reason, blue light emission of LEDs, for so long researched for unsuccessfully, has been achieved.Signaling, lighting will be the domains of LEDs in the next decades - a good start in the 21st millenium. But a the same time a paradigm shift in the display industry could come about. Dominated for the last 10 years by Liquid Crystal Displays (LCD), which are reflecting or transmitting light from extra light sources, self-emitting displays will challenge this dominance. Capable of handling very complex information by multiplexed addressing of millions of picture elements (pixels) in full color electroluminescence in the form of Organic LEDs and Thin Film Electroluminescence is gaining markets. Both technologies, much less matured than LED, incorporate much different physical features. The broad materials potential almost unexplored in both cases, they are good for surprises.The volume tries to present overviews ovber the 3 different technologies, covering in each case the mechanisms, the most important material properties, essential for the implementation of the working principles, the major applications and the system aspects. The reader will learn how the new long-life, maintenance free, power saving red traffic lights in the Silicon Valley function, and what the tail lights of his next car will be. The fascinating physics of polymer light emitters, eventually manufactured in a roll-to roll process, for cellular phones, or hand-held wireless computers, will become transparent. And why is it that up to now only sulfides can be used for the simplest design of displays capable of proven multiplex ratios of 1000? The comparison of the different electroluminescences, if this plural exists, will hopefully give experts of one of the fields, students of any of them, and application engineers new insights and ideas. Materials scientists and engineers will be caught by the comparison in analyzing what else one could provide to improve performance.

Electroluminescence

Electroluminescence PDF Author: H. K. Henisch
Publisher: Elsevier
ISBN: 1483222802
Category : Technology & Engineering
Languages : en
Pages : 383

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Book Description
Electroluminescence deals with the multiplicity of forms related to electroluminescence phenomena. The book reviews some basic observations of electroluminescence, the Gudden-Pohl and Dechene effects, the electroluminescence phenomena in zinc sulfide phosphors, in silicon carbide, and in compounds composed of elements in groups III and V of the Periodic Table (such as gallium phosphide). The text also explains polarization of free charge carriers, the outline of junction breakdown theory, carrier recombination, and phosphor suspensions. The book describes the growth of zinc sulfide crystals (from solution, melt, or vapor), electroluminescence effects in zinc sulfide crystals, and observations made in the pre-breakdown region in single crystals of cadmium sulfide. Boer and Kummel (1952) describes the pre-breakdown region, under stable and wholly reversible conditions, as being connected with thermal instability. The book notes that the reversibility and repeatability of the phenomena below the breakdown point show that the field effects responsible for the sharp increase in conductance do not damage the crystal. The text also discusses the construction and characteristics of electroluminescent cells, as well as their applications. The book will prove valuable for physico-chemists, technical designers, or engineers whose works are related to instrumentation and solid-state electronics.

Advances in Infrared Photodetectors

Advances in Infrared Photodetectors PDF Author:
Publisher: Elsevier
ISBN: 0123813387
Category : Science
Languages : en
Pages : 385

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Book Description
Semiconductors and Semimetals has distinguished itself through the careful selection of well-known authors, editors, and contributors. Originally widely known as the "Willardson and Beer" Series, it has succeeded in publishing numerous landmark volumes and chapters. The series publishes timely, highly relevant volumes intended for long-term impact and reflecting the truly interdisciplinary nature of the field. The volumes in Semiconductors and Semimetals have been and will continue to be of great interest to physicists, chemists, materials scientists, and device engineers in academia, scientific laboratories and modern industry. - Written and edited by internationally renowned experts - Relevant to a wide readership: physicists, chemists, materials scientists, and device engineers in academia, scientific laboratories and modern industry

LED Lighting

LED Lighting PDF Author: T. Q. Khan
Publisher: John Wiley & Sons
ISBN: 3527412123
Category : Science
Languages : en
Pages : 517

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Book Description
Promoting the design, application and evaluation of visually and electrically effective LED light sources and luminaires for general indoor lighting as well as outdoor and vehicle lighting, this book combines the knowledge of LED lighting technology with human perceptual aspects for lighting scientists and engineers. After an introduction to the human visual system and current radiometry, photometry and color science, the basics of LED chip and phosphor technology are described followed by specific issues of LED radiometry and the optical, thermal and electric modeling of LEDs. This is supplemented by the relevant practical issues of pulsed LEDs, remote phosphor LEDs and the aging of LED light sources. Relevant human visual aspects closely related to LED technology are described in detail for the photopic and the mesopic range of vision, including color rendering, binning, whiteness, Circadian issues, as well as flicker perception, brightness, visual performance, conspicuity and disability glare. The topic of LED luminaires is discussed in a separate chapter, including retrofit LED lamps, LED-based road and street luminaires and LED luminaires for museum and school lighting. Specific sections are devoted to the modularity of LED luminaires, their aging and the planning and evaluation methods of new LED installations. The whole is rounded off by a summary and a look towards future developments.

Quantum Efficiency in Complex Systems, Part II: From Molecular Aggregates to Organic Solar Cells

Quantum Efficiency in Complex Systems, Part II: From Molecular Aggregates to Organic Solar Cells PDF Author:
Publisher: Academic Press
ISBN: 0123910641
Category : Technology & Engineering
Languages : en
Pages : 377

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Book Description
Since its inception in 1966, the series of numbered volumes known as Semiconductors and Semimetals has distinguished itself through the careful selection of well-known authors, editors, and contributors. The "Willardson and Beer" Series, as it is widely known, has succeeded in publishing numerous landmark volumes and chapters. Not only did many of these volumes make an impact at the time of their publication, but they continue to be well-cited years after their original release. Recently, Professor Eicke R. Weber of the University of California at Berkeley joined as a co-editor of the series. Professor Weber, a well-known expert in the field of semiconductor materials, will further contribute to continuing the series' tradition of publishing timely, highly relevant, and long-impacting volumes. Some of the recent volumes, such as Hydrogen in Semiconductors, Imperfections in III/V Materials, Epitaxial Microstructures, High-Speed Heterostructure Devices, Oxygen in Silicon, and others promise that this tradition will be maintained and even expanded. Reflecting the truly interdisciplinary nature of the field that the series covers, the volumes in Semiconductors and Semimetals have been and will continue to be of great interest to physicists, chemists, materials scientists, and device engineers in modern industry. - Written and edited by internationally renowned experts - Relevant to a wide readership: physicists, chemists, materials scientists, and device engineers in academia, scientific laboratories and modern industry

Oxide Electronics

Oxide Electronics PDF Author: Asim K. Ray
Publisher: John Wiley & Sons
ISBN: 1119529484
Category : Technology & Engineering
Languages : en
Pages : 624

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Book Description
Oxide Electronics Multiple disciplines converge in this insightful exploration of complex metal oxides and their functions and properties Oxide Electronics delivers a broad and comprehensive exploration of complex metal oxides designed to meet the multidisciplinary needs of electrical and electronic engineers, physicists, and material scientists. The distinguished author eschews complex mathematics whenever possible and focuses on the physical and functional properties of metal oxides in each chapter. Each of the sixteen chapters featured within the book begins with an abstract and an introduction to the topic, clear explanations are presented with graphical illustrations and relevant equations throughout the book. Numerous supporting references are included, and each chapter is self-contained, making them perfect for use both as a reference and as study material. Readers will learn how and why the field of oxide electronics is a key area of research and exploitation in materials science, electrical engineering, and semiconductor physics. The book encompasses every application area where the functional and electronic properties of various genres of oxides are exploited. Readers will also learn from topics like: Thorough discussions of High-k gate oxide for silicon heterostructure MOSFET devices and semiconductor-dielectric interfaces An exploration of printable high-mobility transparent amorphous oxide semiconductors Treatments of graphene oxide electronics, magnetic oxides, ferroelectric oxides, and materials for spin electronics Examinations of the calcium aluminate binary compound, perovoksites for photovoltaics, and oxide 2Degs Analyses of various applications for oxide electronics, including data storage, microprocessors, biomedical devices, LCDs, photovoltaic cells, TFTs, and sensors Suitable for researchers in semiconductor technology or working in materials science, electrical engineering, and physics, Oxide Electronics will also earn a place in the libraries of private industry researchers like device engineers working on electronic applications of oxide electronics. Engineers working on photovoltaics, sensors, or consumer electronics will also benefit from this book.

The Facts on File Dictionary of Physics, Fourth Edition

The Facts on File Dictionary of Physics, Fourth Edition PDF Author: John Daintith
Publisher: Infobase Publishing
ISBN: 1438109490
Category : Physics
Languages : en
Pages : 289

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Book Description
An illustrated dictionary containing over 2,800 entries explaining physics terms and concepts.

The Selected Papers of Sir John Meurig Thomas

The Selected Papers of Sir John Meurig Thomas PDF Author: John Meurig Thomas
Publisher: World Scientific Publishing Company
ISBN: 1786341875
Category : Science
Languages : en
Pages : 622

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Book Description
John Meurig Thomas is a former Director of the Royal Institution of Great Britain, a former head of the Department of Physical Chemistry and former Master of Peterhouse, University of Cambridge. A world-renowned solid-state, materials and surface chemist, he has been an educator, researcher, academic administrator, author of university texts, government advisor, industrial consultant and trustee of national museums in a career spanning over 50 years. Recipient of many international awards, including the Linus Pauling, Willard–Gibbs, Kapitza, Natta, Stokes, Davy and Faraday medals, he is also a fellow of the Royal Society (1977), of the American Philosophical Society (1993) and of ten other national academies. He is best known for his fundamental work in heterogeneous catalysis, chemical electron microscopy and in the popularisation of science, for which, in conjunction with his services to chemistry, he was knighted (1991). He is also founding editor of three scientific journals and editor or co-editor of some 30 monographs. A new mineral, meurigite, was named in his honour (1995). Most recently in 2016, Sir John was awarded the Royal Medal for Physical Sciences by the Royal Society. Drawn from over 1200 publications, this volume contains a summarised account of Sir John's work, with a selection of the new techniques pioneered and discovered by him and his colleagues. Also included are popular science articles, and various illustrations of techniques which have enhanced our knowledge of many facets of condensed matter science. Contributions from 80 peers, colleagues, former co-workers, students and friends worldwide who have interacted with or been influenced by him are a tribute to the professional and personal life of Sir John, making this book a unique reflective summary of the work of one of the greatest achievers in modern British physical science.

Materials for Optoelectronic Devices, OEICs and Photonics

Materials for Optoelectronic Devices, OEICs and Photonics PDF Author: H. Schlötterer
Publisher: Elsevier
ISBN: 0444596755
Category : Science
Languages : en
Pages : 542

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Book Description
The aim of the contributions in this volume is to give a current overview on the basic properties and applications of semiconductor and nonlinear optical materials for optoelectronics and integrated optics. They provide a cross-linkage between different materials (III-V, II-VI, Si-Ge, glasses, etc.), various sample dimensions (from bulk crystals to quantum dots), and a range of techniques for growth (LPE to MOMBE) and for processing (from surface passivation to ion beams). Major growth techniques and materials are discussed, including the sophisticated technologies required to exploit the exciting properties of low dimensional semiconductors. These proceedings will prove an invaluable guide to the current state of optoelectronic and nonlinear optical materials development, as well as indicating trends and also future markets for optoelectronic devices.

Proceedings of the International Symposium on Pits and Pores--Formation, Properties, and Significance for Advanced Luminescent Materials

Proceedings of the International Symposium on Pits and Pores--Formation, Properties, and Significance for Advanced Luminescent Materials PDF Author: P. Schmuki
Publisher: The Electrochemical Society
ISBN: 9781566771344
Category : Science
Languages : en
Pages : 556

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Book Description