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LED or Light emitting diode is based on Electroluminescence.
Due to movement of photon in the wire it changes the sides hence during the period it changes it side the light is emitted. This is a rather complex thing.
The change in the material of wire leads to different colors :
- Powdered zinc sulfide doped with copper (producing greenish light) or silver (producing bright blue light)
- Thin-film zinc sulfide doped with manganese (producing orange-red color)
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