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Light Emitting Diodes Schubert
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Light-Emitting Diodes NEW by E. Fred Schubert |  |
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US $94.59 | 19d 15h 15m |
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LIGHT-EMITTING DIODES - E. FRED SCHUBERT (HARDCOVER) NEW | |
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US $108.46 | 10d 6h 35m |
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NEW Light-Emitting Diodes - Schubert, E. Fred | |
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US $87.10 | 9d 10h 30m |
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Light-Emitting Diodes (Hardcover) $186.1 Revised and fully up-dated, the second edition of this graduate textbook offers a comprehensive explanation of the technology and physics of LEDs such as infrared, visible-spectrum, ultraviolet, and white LEDs made from III-V semiconductors. Elementary properties such as electrical and optical characteristics are reviewed, followed by the analysis of advanced device structures. With nine additional chapters, the treatment of LEDs has been vastly expanded, including new material on device packaging, reflectors, UV LEDs, III-V nitride materials, solid-state sources for illumination applications, and junction temperature. Radiative and non-radiative recombination dynamics, methods for improving light extraction, high-efficiency and high-power device designs, white-light emitters with wavelength-converting phosphor materials, optical reflectors, and spontaneous recombination in resonant-cavity structures are discussed in detail. With exercises, solutions, and illustrative examples, this textbook will be of interest to scientists and engineers working on LEDs and graduate students in electrical engineering, applied physics, and materials science. |
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Light-Emitting Diodes $87.75 No Synopsis Available |
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Organic Light Emitting Diodes (Hardcover) $385.4 Addressing the development of the organic light emitting diode (OLED) based on rare-earth and transition-metal complexes—Europium, Terbium, Ruthenium, and Rhenium—this unique perspective explains how these materials can be used to build organic-LEDs, from chemistry synthesis to device operation and the related charge transfer and confinement. Examining how organic materials can be used to build organic-LEDs, the relationship between the chemistry molecule "design," and state-of-the-art and expected pathways, this intelligent report provides intensive experimental results for scientists and engineers working in this new OLED framework, while maintaining a didactic utility for graduation students and teachers studying optoelectronics. |
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Polymer Light Emitting Diodes Based on Polyfluorenes $138.61 This work is devoted to the study on Polymer Light Emitting Diodes (PLEDs) based on polyfluorenes, a promising class of semiconductive polymers for lightemitting diode applications. It covers theories of PLEDs, literature overview of polyfluorenebased lightemitting diodes, as well as research results by the authors. In this study, several types of PLED devices based on neat polyfluorenes or polyfluorene blends were designed, fabricated, and characterized. The electrical characteristics of two neat polyfluorenes were simulated via using space charge limited current theory for the holeonly case and/or exploiting a commercial software package. Author: Zhang, Qiushu/ Zivanovic, Sandra Binding Type: Paperback Number of Pages: 164 Publication Date: 2010/08/16 Language: English Dimensions: 5.98 x 9.01 x 0.37 inches |
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Light-emitting Diodes and Optoelectronics (Hardcover) $369.61 Description not available. |
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Electroluminescence in Organic Light-emitting Diodes $80.93 No Synopsis Available |
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Blue Laser and Light Emitting Diodes II $95.55 No Synopsis Available |
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Organic Light-Emitting Diodes: Principles, Characteristics & Processes $233.95 No Synopsis Available |
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Organic Light Emitting Diodes : The Use of Rare Earth and Transition Metals $146.2 No Synopsis Available |
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Introduction to Nitride Semiconductor Blue Lasers and Light Emitting Diodes $204.7 No Synopsis Available |
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CarbazoleBased Emitting Compounds $141.79 Carbazole is a heterocyclic tricyclic aromatic organic compound consisting of two sixmembered benzene rings fused on either side of a fivemembered nitrogencontaining ring. A large number of carbazole derivatives have been designed and synthesized and organic electronic devices based on these derivatives such as organic light emitting diodes (OLEDs), have been investigated. The optical and electrical properties of carbazoles are affected by substitution on the 2, 3, 6, 7 and 9Hpositions. Many carbazole derivatives have sufficiently high triplet energy to make them an efficient host where they can serve as red, green, or blue triplet emitters. Highly fluorescent and stable carbazolebased compounds were synthesized and characterized. Substitution of carbazoles at 3 and 6 position by tertbutyl group enhanced the solubility. Suitably susbtituted carbazoles form highly stable fluorescent organic nanoparticles. The emission of these nanoparticles was reversibly switched on/off in the bluegreen and orangered regions from a change in the ratio of the tetrahydrofuran/water system used in their preparation. Author: Adhikari, Ravi/ Neckers, Dr Douglas C. Binding Type: Paperback Number of Pages: 192 Publication Date: 2010/05/05 Language: English Dimensions: 5.98 x 9.01 x 0.44 inches |
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Fundamentals of High-Efficiency OLEDS: Basic Science to Manufacturing of Organic Light-Emitting Diodes $126.7 No Synopsis Available |
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Principles of Solar Cells, Leds and Diodes (Hardcover) $364.39 The book will cover the two most important applications of semiconductor diodes – solar cells and LEDs - together with quantitative coverage of the physics of the PN junction at the senior undergraduate level. It will include: Review of semiconductor physicsIntroduction to PN diodesThe solar cellPhysics of efficient conversion of sunlight into electrical energy Semiconductor solar cell materials and device physicsAdvanced solar cell materials and devicesThe light emitting diodePhysics of efficient conversion of electrical energy into lightSemiconductor light emitting diode materials and device physicsAdvanced light emitting diode materials and devices |
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Principles of Solar Cells, Leds and Diodes (Paperback) $148.45 The book will cover the two most important applications of semiconductor diodes – solar cells and LEDs - together with quantitative coverage of the physics of the PN junction at the senior undergraduate level. It will include: Review of semiconductor physicsIntroduction to PN diodesThe solar cellPhysics of efficient conversion of sunlight into electrical energy Semiconductor solar cell materials and device physicsAdvanced solar cell materials and devicesThe light emitting diodePhysics of efficient conversion of electrical energy into lightSemiconductor light emitting diode materials and device physicsAdvanced light emitting diode materials and devices |
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Natural Full Spectrum Light Boosts Health and Led's Will Boost Communications
In recent years research scientists have been taking a closer look at the lighting in our homes, offices and vehicles. They are seeing potential for ways of improving health and finding new means of electronic communication through LED’s and natural full spectrum lighting.
Though this will not happen tomorrow, experts at the Rensselaer Polytechnic Institute in Troy, N.Y., an academic home for lighting research, are confident that this burgeoning field of study will soon reap outstanding rewards.
According to lighting engineer, E. Fred Schubert, a new era of "smart" light sources is just beginning. "We are looking at lighting systems that provide more than lighting," says Shubert. Shubert is talking about light-emitting diodes, or LED’s. Most people know them as being quite small, like the lights that form numbers on digital clocks or blink on answering machines; however recent technological advances have increased their luminosity significantly. These increases have made it possible for LED’s to illuminate swimming pools and serve as traffic signals, and with time these low-cost light sources will perform even more tasks.
Though LED’s offer energy savings when compared to standard lighting, Schubert and other researchers are more excited about the communications that they may provide. The latter is because LED’s can be made to blink so fast that a person doesn't notice, but a receiving device can. And that, Schubert says, opens the door to using lights for electronic communication as well as illumination.
Of course, fiber optic cables already transmit lots of data with light signals. But Schubert is talking about things like:
- Brake lights that tell a closely following car to stop
- Headlights that tell a red stop light to turn green
- Road signs that communicate warnings to specific cars.
- Room lights that link your computer to the Internet, avoiding Wi-Fi signals that can be pirated.
Schubert said such uses depend on overcoming some basic technical barriers, like making them more powerful and energy-efficient. He states, "I think we're looking at maybe a timeframe of the next five to twenty years."
Meanwhile, Mariana Figueiro, program director at Rensselaer's Lighting Research Center and head of a committee on light and human health for the Illuminating Engineering Society of North America, believes that lighting in offices and schools could be improved to help people stay healthy and productive, by acting on their internal body clocks. "Light isn't just for vision anymore," says Figueiro, “Light cues, especially blue light, help keep the 24-hr biological clock on its daily cycle.” Figueiro indicated that studies suggest such possibilities as seasonal depression, fatigue, and sleep disturbances; and have even gone so far as suggest that maybe even cancer, especially breast cancer could be influenced by the lighting used in buildings.
Be on the lookout for more breaking news related to the use of LED’s and natural full spectrum lighting being used in buildings.
About the Author
Denny is fascinated by light, and all things associated with it.
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