led: more technical details on led lighting solutions
On the surface of the device, the electrode is connected to p-type layer.
Typically, commercial LED lights also include some kind of sapphire substrate.
The scientists of LED research must always remember that when the refractive index of the material is not correctly paired with the index of the semiconductor, the heat may increase, and of course there is a potential danger.
This is actually exactly the opposite of one of the main benefits of LED lighting, which is that although light is produced, they do not maintain or release heat.
However, as long as the basic scientific functions are properly performed in the design of each LED unit, any potential hazard can be remedied.
Many developments, experiments and studies have been done on the production and benefits of LED lighting.
Device sends non-coherent narrow chargespectrum light.
As a result, LED lighting gives out a special form of electric light, which can theoretically be easily used as an alternative light source.
Of course, the semiconductor chip of the LED light is packaged in solid plastic in the form of a lens --
Very effective, very powerful.
Make LED lighting one of the safest bulbslighting.
The development of LED began with the introduction of lighting equipment and arsenic aluminum-
Especially for infrared and red lighting.
Of course, LED lighting has a good start and is already useful for things like Christmas trees and theater lighting (
Because they can be in several colors. )
However, the research and development of LED lighting has and will continue to grow.
The more advanced and sophisticated LED is the LED in UV, blue and even white tones.
For example: UV GaN LED, blue LED uses broadband gap semiconductor in GaN and InGaN (
However, the concept was there, and it was not possible to achieve blue-light LED lighting until 1993, thanks to the work of a person named Shuji nak at Nicha.
White LED lights can be created in many ways.
For example, as I mentioned just now, most of the LED white light is based on the structural design of InGaN and GaN.
It is said that these lights can emit blue light wavelengths between 450 nm and 470 nm from GaN.
GaN/InGaN lamps usually use a yellow ce-color phosphorus coating
Vanadium-doped aluminum garnet (Ce3+:YAG).
The crystal is considered a flicker compared to the fluorescent body.
Because the role of yellow light is to stimulate the red and green light receptors of someone\'s eyes, the appearance of white actually comes from a mixture of yellow and blue.
The resulting white light is a White Shadow, often referred to as \"Moon White\" by people inside and outside the industry \".
The overall spectrum of the white LED light will clearly indicate that it comes directly from GaN-
Based on the LED, the peak is about 465 nm.
When the wider
The emitted light can extend between 500 and 700 nanometers, and the stroke of the shifted light emitted by the elements of the ce3yago fluorescent body.
In manufacturing, due to the spectral properties of the diode, the LED must be properly classified according to its own special properties during processing.
White LED can also be made in other ways, for example: it can be made in ultraviolet (NUV)
Launch LED with an efficient eu mixture-
Based on red and blue, these luminous materials are added to the green of copper and aluminum-doped zinc sulfur or zinc: copper, aluminum emission.
However, this method is less efficient than the LED using the YAG: Ce fluorescent body, mainly because it is larger and more energy converted into heat than other LEDs.
A graduate student named Micheal Bowers, Nashville, Tennessee, has recently developed an LED lighting that includes coating blue LED with quantum dots.
Quantum dots responding to LED light emit white light.
The effect is very similar to incandescent lamp-
This means that the technology produces warm, glowing, yellow light.
Before Bowles found out, another latest way to produce White
Light LED is a method of not using any fluorescent substance at all.
Some people think the idea is revolutionary.
In the development of LED today, this is undoubtedly a great idea.
The latest method is based on the homogeneous extension of zinc selenium (ZnSe).
Basically, the ZnSe substrate used for this purpose is a product that simultaneously emits blue light from the active region and yellow light from the substrate.