LED: More Technical Details on LED Lighting Solutions
There have been many developments, experiments, and research done on the production and benefits of LED lighting. The semiconductor - device sends charges of incoherent narrow - spectrum light. LED lighting therefore emits a particular form of electroluminescence that can, theoretically, be easily utilized an alternative light source. The semiconducting chip of an LED light is of course, cased in solid plastic in the form of a lens - a very effective and very strong. Making LED lighting one of the safest kinds of bulb - lighting.
The development of LED began with the introduction of lighting devices and with gallium arsenide - particularly for infrared and red lighting purposes. Of course, LED lighting had a great beginning, already useful for things such as Christmas trees and theatrical lighting (being that they can be used in several colors.) However, the research and development of LED lighting has since grown and will continue to grow.
More advanced and especially more complex LED's are those being created in ultraviolet, blue and even white shades. For example: an ultraviolet GaN LED,Blue type of LED uses a wide band gap semiconductor in GaN as well as InGaN (indium gallium nitrate). The concept was there, however, it was not until 1993 that high brightness of blue LED lighting was possible thanks to the work of a man named Shuji Nakamura from the Nicha Corporation.
White LED lights can be created in more than one way. For example: As I mentioned, most LED white lights are based on InGaN and GaN structural designs. These lights are said to be capable of emitting bluish light wavelengths between 450 nm and 470 nm blue from the GaN.
The GaN/InGaN lights usually use a yellowish colored phosphor coating of cerium - doped yttrium aluminum garnet (Ce3+:YAG). The Ce3+YAG crystals are considered a scintillator as opposed to a phosphor. Because yellow light acts to stimulate the red and green light receptors of someone's eye, the appearance of white actually comes from the presence of the mix of the yellow and blue. The white light resulting from this is a shade of white often referred to as "lunar white" by people in and outside of the industry.
The overall spectrum of a white LED light will distinctly show that it comes directly from a GaN-based LED and can peak at about 465 nanometers. When more broad - strokes of shifted light emitted by the elements of Ce3+YAG phosphor the light emitted can be extended to between 500 and 700 nanometers. In manufacturing, the LED's must be properly sorted during the process by their own particular characteristics because of the spectral characteristics of the diode.
White LED's can be made in other ways as well, for example: one can coat near ultraviolet rays (NUV) that emit LED's with a mix of highly efficient europium - based reds and blues, these phosphors added to green emitted by copper and aluminum doped zinc sulfide, or ZnS:Cu, Al. However, this method is less efficient than LED with YAG:Ce phosphor, primarily because it is larger and more energy is transformed into heat than with other LED's.
A man named Micheal Bowers, as a graduate student in Nashville, TN at Vanderbilt University recently developed a kind of LED lighting that involves coating a blue LED with quantum dots. The quantum dots, in response to the LED light, will glow white. The effect is quite similar to incandescent bulbs - meaning that the technique produces a warm, glowing, yellowish light.
Before Bowers made his discovery, another of the most recent method of producing white - light LED's is a method which makes use of absolutely no phosphors whatsoever. Some call the idea revolutionary - it is certainly a great idea in the development of LED's today. The newest method is based on a homoepitaxially developed form of zinc selenide (ZnSe). Basically, the ZnSe substrate for this purpose is a creation which emits blue light simultaneously from the active region as well as the yellow from the substrate.
Related Tags: led, led lighting, alternative lighting, led lights, saving electricity, light and energy concerns
Anne Clarke writes numerous articles for websites on gardening, parenting, fashion, and home decor. Her background includes teaching, gardening, and fashion. For more of her articles on LED lighting and other environmental lighting alternatives, please visit solarhome.org, supplier of Solar Lighting and Solar Panels.Your Article Search Directory : Find in Articles
Recent articles in this category:
- Consumers- Discovering Alternative Fuels In The Midst of High Gasoline Prices
In light of the much debated topic on rising gasoline and energy costs, some experts say new investm
- Carbon Tax Versus Cap-and-Trade Approaches to Global Warming - Part 2
As you may recall from Part 1 of this article, in the cap-and-trade system many companies might get
- Carbon Tax Versus Cap-and-Trade Approaches to Global Warming - Part 1
After making a strong case for Europe to adopt the cap-and-trade strategy back in 1997, the United S
- Why Managing Our Crude Oil Supply Matters
Our modern world requires a lot of petroleum products to function. From cars to planes to massive tr
- Steam and Water Properties Formulation History
Steam and water properties play pivotal roles in the design and performance of steam boilers, steam
- Alternative Home Energy
Hydrogen fuel cells, biomass gases, solar collectors, solar hot water systems, heat storage vaults,
- Solar Energy is Green Energy
Solar energy is the earliest source of energy known to mankind, and is also the origin of other form
- Harnessing Power from Water Energy
Water is one of the most common chemical compounds on earth, and the oceans provide 75% of the surfa
- What's Actually In Biodiesel?
Rising prices of energy fuels have prompted companies and individuals to search for low-cost sources
- EIA Summer Outlook - Good for Natural Gas Stocks?
The surprise Northeaster blowing across the eastern United States may have confirmed the final botto
Most viewed articles in this category:
- Alternative Fuel: Fast Food Takes on a Whole New Meaning
The United States Department of Agriculture (USDA) dropped a bomb in early 2007 that may have a prof
- Ocean Waves, Hydro Power Innate to Human Thought; Why?
Some things seem to come naturally to humans, things such as the power of water. Perhaps this is som
- The Power Within (Fission & Fusion)
My father drove up to our house back in 1968 in a brand new Volkswagen "Bug". I was only 11 years ol
- Nuclear Power for Australia?
Australia has one of the worlds largest supplies of Uranium. It is therefore ironic that Australia
- Archimedes Screw, Ocean Waves and Fieldstone Energy
Humankind appears to be up against either a political rock or a Climate Crisis hard place or both. Y
- A Glimpse into the World of Sealed Lead Batteries
Through the years there has been an increase in the use of portable electronic and an electric devic
- The Solar Energy Breakthrough Everyone Missed
When it comes to breaking our oil addiction, solar energy is often sited as a perfect renewable ener
- Fast Facts on Biodiesel
In a world where people rely heavily on diesel-powered engines to perform many functions for both ag
- Mideast Oil, Soon We Won't Need It, Then Who Will They Kick Around?
GM and all the auto makers are pushing hybrids to the front burner. Save fuel. They don't need to sa
- The Advantages of Wind Energy
Wind power is one the oldest and most basic types of energy. It's been used since the first windmill