Light Emitting Diode Behavior

LightEmitting Diode $68.51 Light emitting diode. Oleg Losev, List of LED failure modes, Organic light emitting diode, Miniature light emitting diode, Solid state lighting, LED lamp, LED power sources, Electrical polarity of LEDs, LED circuit, LED as light sensor Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 74 Publication Date: 2009/10/08 Language: English Dimensions: 5.98 x 9.01 x 0.17 inches

Introduction to Light Emitting Diode Technology and Applications $71.13 No Synopsis Available

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.

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

Pacer 20 Diode LED Light $15.95 LED (Light Emitting Diode) lighting gives extra brightness and longer life than conventional bulbs. Pacer's LED Light Kit works well when a light with extra length is needed. It is actually 12 LED lights within 1 larger light. The compact, slimline design allows a great variety of mounting location options. Includes one light. Mounts with two-sided tape Simple two wire installation Long life Low power draw Each light is 8'' L x 5/8'' W x 3/4'' H. Available in Red, Amber, White and Blue* *White and blue lights are an additional $6.00

Pacer 12 Diode LED Light $12.95 LED (Light Emitting Diode) lighting gives extra brightness and longer life than conventional bulbs. Pacer's LED Light Kit works well as a third brake or turn signal indicator. It is actually 12 LED lights within 1 larger light. The compact, slimline design allows a great variety of mounting location options. Includes one light. Mounts with two-sided tape Simple two wire installation Long life Low power draw Each light is 4 5/8'' L x 7/16'' W x 3/4'' H. Available in Red, Amber, White and Blue* *White and blue lights are an additional $2.00

Light-Emitting Diode Pioneers : Nick Holonyak, Isamu Akasaki, Oleg Losev, H. J. Round, Shuji Nakamura $7.7 No Synopsis Available

Light-Emitting Diode Manufacturers : Philips Lumileds Lighting Company, Osram Opto Semiconductors Gmbh, Neopac, Cree Inc. , Nichia Corporation $8.81 No Synopsis Available

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.

Light Emitting Silicon for Microphotonics $380.76 A fascinating insight into the stateoftheart in silicon microphotonics and on what we can expect in the near future. The book presents an overview of the current understanding of getting light from silicon. It concentrates mainly on low dimensional silicon structures, like quantum dots, wires and wells, but covers also alternative approaches like porous silicon and the doping of silicon with rareearths. The emphasis is on the experimental and theoretical achievements concerning the optoelectronic properties of confined silicon structures obtained during recent years. Silicon based photonic crystals are in particular considered. An in depth discussion of the route towards a silicon laser is presented. Author: Ossicini, Stephano/ Ossicini, S./ Pavesi, L. Series Title: Springer Tracts in Modern Physics (Hardcover) Series Number: 194 Binding Type: Hardcover Number of Pages: 294 Publication Date: 2004/01/12 Language: English Dimensions: 9.21 x 6.14 x 0.69 inches

Light-Emitting Diodes $87.75 No Synopsis Available

Advances in Light Emitting Materials $224.25 No Synopsis Available

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

Light-emitting Diodes and Optoelectronics (Hardcover) $369.61 Description not available.

Advances in Organic Light-Emitting Device $113.1 No Synopsis Available

Organic Light-Emitting Devices : A Survey $130.65 No Synopsis Available

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energy-efficient light bulbs

Amazing OLED Display

OLED, or Organic Light-Emitting Diodes, are becoming part of the newest of technology applications for displays. This challenging industrial science is being perfected in laboratories all over the world, and the race is on to make this new high tech knowledge a part of the electronics market.

Organic light-emitting diodes are unlike their more mechanical cousins, the LED (light-emitting diode) or LCD (liquid crystal display). The organic light emission is a specially designed compound, modeled after natural light-emitting biochemistries such as fireflies or plankton. Scientists and biologists could not exactly replicate the light emitting behavior of the natural compounds, so they had to synthesize their own.

The special compounds mix with a polymer, which has light emitting behavior of its own, and then electricity passes through them. This excites the molecules to emit light. Different configurations of the molecules emit different wavelengths of light when subjected to various voltages. This is oversimplifying to a very high degree, but an overall picture is all that is required.

There are many advantageous factors that make an OLED display such a great piece of equipment:

BY ITS OWN LIGHT

OLEDs emit their own light. This gives, say a flat panel computer display, no need for a backlight, which are in LCD displays. This means less power consumption. After applying the organics to a board, you can get all the colors of the visual spectrum in the display, all emitted from each molecule. This gives a depth and resolution that is getting larger and larger as the technology advances.

COST EFFECTIVE

Because OLEDs can be printed using inkjet or even silk-screening printing technology, on any suitable substrate, this drives the price down in comparison to LCD’s. LED and LCD displays use much more power than OLED displays. No backlight means less power, which means less power consumption.

NATURE FRIENDLY

This is definitely a green product. Another factor is its recyclability. The polymers used can be recycled using today’s methods and reused to make more displays. Manufacturers are betting on this technology as the “eco-friendly” product of the next decade.

CONVENIENCE

Thinness is also a factor. Organic LED’s can be as thin as you need, and manufacturers are currently looking into roll-up, or flexible display products. Can you imagine: A display you can fold and put in your pocket, only to retrieve and unfold to a whopping twenty-four inch square? You could hang it on the wall or drape it across a table. The applications are limitless.

OLED display advantages are clear: Price, economy, ecology, and versatility. As the technology progresses, the resolution will become more and more clearer, and soon it will be beyond anything we have today.

The future is now; the future is OLED.

About the Author

Ivan Hrsak - main editor of www.oledgadgets.com