Question

the current in the forward bias is known to be more microampere than the current in the reverse bias microampere what is the reason then to operate a photodiode in Reverse bias ​

Answer 1

Answer:

Explanation:

he current in the forward bias is known to be more (~mA) than the current in the reverse bias (~ A). ... The photodiode works in reverse biased condition although the current produced is less. In reverse bias, the width of depletion layer increases thereby reducing the capacitance across the junction.

Answer 2

Answer:

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Explanation:

As fractional change in minority charge carriers is more than the fractional change in majority charge carriers, the variation in reverse saturation current is more prominent.