what exactly do you mean by led ?
What do you mean by"led" ?
A brief overview of the workings of a light-emitting diode.
In its simplest terms, the simplest definition, an LED ( led full form) is an electronic device that produces light when an electric current passing through it. The light is produced when electrons , holes and electrons (known as holes and electrons) are incorporated into semiconductor's material.
Because light is generated inside the semiconductor solid LEDs , they are described using the term solid-state technology. The term solid-state lighting, which also incorporates organic LEDs (OLEDs) creates this kind of light from other sources with heated filaments (incandescent and tungsten lamp and halogens) (or gas discharge) (fluorescent lamps).
Different colors
Inside the semiconductor of the LED the electrons as well as holes are contained within energy bands. A band's separation (i.e. it is also known as"the bandgap) affects the brightness of photons (light particles) that are released by the LED.
The photon energy determines the wavelength of light that is emitted and consequently the color. Different semiconductor materials that have different bands emit various shades of light. The exact duration (color) could be modified by changing its structure area or the active region.
LEDs are comprised of semiconductor compounds that are composed of elements belonging to group III and group V of the periodic table (these are also referred to as III-V-based substances). Some examples of III-V-based materials that are commonly used in the production of LEDs include gallium arsenide (GaAs) and gallium Phosphide (GaP).
In the beginning of the 1990s, LEDs were sold in a limited range of shades and, more specifically, commercial blue and white LEDs weren't in use. In the 1990s, LEDs that were made from gallium nitride (GaN) technology expanded the colors available and created a myriad of new possibilities.
Main LED materials
The main semiconductor materials utilized to make LEDs are:
- Indium gallium Nitride (InGaN):blue, ultraviolet and green high-brightness light bulbs.
- Aluminium Gallium Phosphide (AlGaInP):yellow, bright orange and bright red light sources
- Algalium gallium arsenide (AlGaAs):red and infrared LEDs
- Gallium Phosphide (GaP):yellow and green LEDs
Learn About LED Lighting
- The Basics
- How is LED lighting different?
- Are there advantages to choose the ENERGY STAR(r) qualified LED products for lighting?
The Basics of LED Lighting
What are LEDs and how do they work?
LEDstands for light emitting diode. LED lighting products emit light that works approximately 90 percent more efficient than traditional light bulbs. What is their purpose? A electrical current flows through the microchip. The microchip illuminates these tiny sources of light we refer to as LEDs. This results in visible lights. To ensure proper performance, the heat generated by LEDs is absorbed in a heat sink.
Lifetime of LED Lighting Products
The use-to-date of LED lights differs from other light sources like incandescent lamps and CFL, the compact fluorescent lamp (CFL). LEDs generally do not "burn out" or fail. They instead suffer from 'lumen depreciation' which occurs when the LED's brightness decreases gradually throughout. Contrary to the incandescent bulbs "lifetime" is established on an estimation of the time when the brightness decreases by 30 percent.
How are LEDs Used in Lighting
LEDs are included in bulbs and fixtures for general lighting purposes. Small in size, LEDs provide unique design opportunities. Some LED bulbs appear like traditional light bulbs and fall more similar to the design of conventional lighting bulbs. Certain lighting fixtures could have LEDs inside them to provide permanent light sources. They also offer hybrid solutions that use a non-traditional "bulb" or replaceable light source and are developed specifically for a specific fixture. LEDs are a fantastic opportunity for innovation in lighting designs and can be used to be used in more applications than traditional lighting technology.
LEDs and Heat
LEDs use heat sinks to absorb the heat produced by the LED, and later disperse it to the environment. This stops LEDs from overheating as well as burning out. The control of temperature is typically the main factor in the performance of LEDs throughout its lifetime. The higher temperatures the LEDs are operated at and the greater the intensity of light's efficiency will decrease and the shorter its time-to-use will be.
LED products utilize a range of different styles for heat sinks and designs to control the heat. Modern advances in materials allow manufacturers to create LED bulbs that are similar to the sizes and shapes that traditional bulbs. In spite of the heat-sink design, the majority of LED products that have been granted certification with the ENERGY STAR have been tested to confirm that they are able to handle the heat in order to ensure that the light output is adequate until the end of their life.
Learn more about it here. led full form
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