In an LED,visible light is produced by: | vedclass

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(B) An $LED$ (Light Emitting Diode) is a heavily doped $p-n$ junction diode which emits spontaneous radiation when forward biased. The semiconductor m

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Gallium arsenide

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(B) An $LED$ (Light Emitting Diode) is a heavily doped $p-n$ junction diode which emits spontaneous radiation when forward biased. The semiconductor materials used for $LEDs$ must have a band gap energy corresponding to the visible spectrum. Gallium arsenide phosphide $(GaAsP)$ or Gallium phosphide $(GaP)$ are commonly used materials. Among the given options,Gallium arsenide $(GaAs)$ is a standard semiconductor used in $LED$ technology to produce light,although its specific band gap often emits in the infrared,it is the fundamental material class used for these devices.

In an $LED$,visible light is produced by:

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