Write a short note on L.E.D
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A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons.
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L.E.D
> Full form : Light Emitting Diode
> Nick Holonyak, Jr, the “Father of the Light-Emitting Diode”
> It is a semiconductor device that emits light when an electric current is passed through it.
> Light is produced when the particles that carry the current (known as electrons and holes) combine together within the semiconductor material.
> Working principle : Electroluminescence
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