What Does LED Stand For and How Does it Work?

What Does LED Stand For and How Does it Work?

We will be discussing Led In our Blog- First thing come straight away in mind modern, contemporary gadget – lets discuss first what we really understand by LED.


LIGHT EMITTING DIODE (LED) is an electrical component with the two terminals to conduct the electricity only in one direction.

With an electrical current, the diode emits a bright light around the small bulb. Diodes have been used in many technologies such as radios, televisions and computers as an electrical component for conduction.

The way they work:

When a fitting voltage is applied to the leads, electrons are able to recombine with electron holes within the device releasing energy in the form of photons and this effect is called electroluminescence and the color of the light corresponding to the energy of the photon is determined by the energy band gap of the semiconductor.

An LED is often small in area (less than1 mm2) and integrated optical components may be used to shape its radiation pattern.

In the search of energy – efficient lighting, LEDs have proven to be the most efficient bulbs available, Energy star rated LEDs use at least 75 % less energy than the traditional incandescent bulbs and last 25 time longer according to the U.S. Department of Energy.

LEDs as compared to CFL (compact fluorescent lighting) outdo in efficiency because they have twice the lifespan of CFLs, LEDs are more efficient than both incandescent and CFLs as they emit light in a targeted direction instead of scattering it in all directions and they don’t require to emit great amounts of heat. Incandescent and CFLs release most of their energy as heat 80-90% respectively.

Energy efficient LED


  1. Very interesting and informative information, thank you

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