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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.
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.
Author: Shigeo Shionoya
Publisher: Springer Science & Business Media
ISBN: 3642934307
Category : Science
Languages : en
Pages : 408
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Book Description
The Fourth International Workshop on Electroluminescence (EL-88) was held at the Hotel Holiday, Tottori, Japan, October 11-14, 1988. This workshop was sponsored by the 125 Research Committee on Mutual Conversion between Light and Electricity, Japan Society for the Promotion of Science, in cooperation with SID (Society for Infonnation Display) Japan Chapter, Tottori Prefecture, the Tot tori Industrial Technology Association, and the Foundation for Advancement of International Science (FAIS). The workshop EL-88 was a continuation of the series of international work shops held successively at Liege (Belgium) in 1980, Bad Stuer (DDR) in 1983, and at Wann Springs (Oregon, USA) in 1986. It brought together scientists and engi neers from universities and industry who shared a common interest in discussing electroluminescence and related topics. The number of participants reached 253; 49 from abroad (10 countries) and 204 from Japan. This is almost four times as many as in the previous workshop in 1986, reflecting the recent rapid development and progress of electroluminescence research.
Author: Institute for Applied Technology (U.S.)
Publisher:
ISBN:
Category : Electroluminescence
Languages : en
Pages : 30
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Book Description
Author: J. I. Pankove
Publisher: Springer Science & Business Media
ISBN: 3540374418
Category : Science
Languages : en
Pages : 222
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Book Description
Author:
Publisher: Academic Press
ISBN: 9780080864631
Category : Science
Languages : en
Pages : 257
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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 producing 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.
Author: D. V. Skobel tsyn
Publisher: Springer Science & Business Media
ISBN: 1475703139
Category : Science
Languages : en
Pages : 140
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Book Description
Author: Zakya H. Kafafi
Publisher: CRC Press
ISBN: 1351836773
Category : Technology & Engineering
Languages : en
Pages : 352
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Book Description
Organic light-emitting diode(OLED) technology has achieved significant penetration in the commercial market for small, low-voltage and inexpensive displays. Present and future novel technologies based on OLEDs involve rigid and flexible flat panel displays, solid-state lighting, and lasers. Display applications may range from hand-held devices to large flat panel screens that can be rolled up or hung flat on a wall or a ceiling. Organic Electroluminescence gives an overview of the on-going research in the field of organic light-emitting materials and devices, covering the principles of electroluminescence in organic thin films, as well as recent trends, current applications, and future potential uses. The book begins by giving a background of organic electroluminescence in terms of history and basic principles. It offers details on the mechanism(s) of electroluminescence in thin organic films. It presentsin-depth discussions of the parameters that control the external electroluminescence quantum efficiency including the photoluminescence quantum yield, the light-output coupling factor, carrier/charge injection and transport, and electron and hole recombination processes in organic semiconductors. The authors address the design and the characterization of amorphous charge transport materials with high glass transition temperatures, light-emitting small molecules and conjugated polymers. The book covers state-of-the-art concepts and technologies such as fluorescent and phosphorescent OLEDs, various approaches for patterning organics, and active matrix organic emissive displays including their back panel thin film transistors and pixel electronics. It concludes by summarizing future directions for OLEDs in organic light-emitting displays, large area distributed solid state light sources, and lasers using organic thin films, nanostructures, and photonic crystals. Organic Electroluminescence is an excellent resource and reference for stu
Author:
Publisher: Academic Press
ISBN: 9780080864624
Category : Technology & Engineering
Languages : en
Pages : 331
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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 j oint 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 i n analyzing what else one could provide to improve performance.
Author: Yoshimasa A. Ono
Publisher: World Scientific
ISBN: 9789812385185
Category : Technology & Engineering
Languages : en
Pages : 192
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Book Description
This book discusses recent developments in electroluminescent (EL) displays, in particular thin-film EL displays, which are all-solid emissive displays with fast response, wide viewing angle, high resolution, wide operating temperature ranges and good display qualities. First, the characteristics of four types of EL devices are presented, and the physics of ac thin-film EL devices are detailed, including ideal models, measuring and evaluation methods, high-field electronic transport and properties of phosphor materials. The book emphasizes recent developments in phosphor materials for color thin-film EL devices based on ZnS, SrS, CaS and CaGa2S4, and multicolor thin-film EL panels in four-panel structures. Other important features discussed are drive methods and reliability issues.
Author: Zakya H. Kafafi
Publisher: CRC Press
ISBN: 1420028200
Category : Technology & Engineering
Languages : en
Pages : 528
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Book Description
Organic light-emitting diode(OLED) technology has achieved significant penetration in the commercial market for small, low-voltage and inexpensive displays. Present and future novel technologies based on OLEDs involve rigid and flexible flat panel displays, solid-state lighting, and lasers. Display applications may range from hand-held devices to large flat panel screens that can be rolled up or hung flat on a wall or a ceiling. Organic Electroluminescence gives an overview of the on-going research in the field of organic light-emitting materials and devices, covering the principles of electroluminescence in organic thin films, as well as recent trends, current applications, and future potential uses. The book begins by giving a background of organic electroluminescence in terms of history and basic principles. It offers details on the mechanism(s) of electroluminescence in thin organic films. It presentsin-depth discussions of the parameters that control the external electroluminescence quantum efficiency including the photoluminescence quantum yield, the light-output coupling factor, carrier/charge injection and transport, and electron and hole recombination processes in organic semiconductors. The authors address the design and the characterization of amorphous charge transport materials with high glass transition temperatures, light-emitting small molecules and conjugated polymers. The book covers state-of-the-art concepts and technologies such as fluorescent and phosphorescent OLEDs, various approaches for patterning organics, and active matrix organic emissive displays including their back panel thin film transistors and pixel electronics. It concludes by summarizing future directions for OLEDs in organic light-emitting displays, large area distributed solid state light sources, and lasers using organic thin films, nanostructures, and photonic crystals. Organic Electroluminescence is an excellent resource and reference for stu
