In a light emitting diode (LED),light is emit | vedclass

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(C) light emitting diode $(LED)$ is a heavily doped $p-n$ junction diode. When the diode is forward-biased,electrons from the $n$-region and holes fro

Vedclass · Accepted Answer

recombination of holes and electrons.

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(C) light emitting diode $(LED)$ is a heavily doped $p-n$ junction diode. When the diode is forward-biased,electrons from the $n$-region and holes from the $p$-region are injected into the junction region. In the junction region,these charge carriers undergo recombination. During the process of recombination,the energy released is in the form of photons. If the semiconductor material has a suitable band gap,the energy of the emitted photons corresponds to the visible light spectrum. Therefore,the light emission is due to the recombination of holes and electrons.

In a light emitting diode $(LED)$,light is emitted due to:

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