Why does it take several seconds of time for the photodiodes to come out of saturation


I am currently studying about photodiodes and came across this fact that photodiodes take quite a bit of time to come out of the saturation. What really happens during this time (after it is saturated and time it takes to come out of saturation)?

Best Answer

You know that when you accelerate a car and then "disengage" the motor, the car does not stop immediately. likewise, when a photodiode is "excited," it will take some time to "loose" the excitation energy and return to its previous state.