In the working of a photodiode,the reverse cu | vedclass

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(B) photodiode is a $p-n$ junction diode operated in reverse bias.In reverse bias,the current is primarily due to the drift of minority charge carrier

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concentration of minority carriers.

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(B) photodiode is a $p-n$ junction diode operated in reverse bias.In reverse bias,the current is primarily due to the drift of minority charge carriers across the junction.When light (photons) with energy greater than the bandgap energy falls on the photodiode,it generates additional electron-hole pairs.These photogenerated minority carriers are swept across the junction by the electric field,thereby increasing the reverse current.Therefore,the reverse current in a photodiode is directly dependent on the concentration of minority carriers generated by incident light.

In the working of a photodiode,the reverse current depends on

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