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Determine drift time for carrier across depletion region for photodiode having intrinsic region width of 30μm and electron drift velocity of 105 ms-1.

Determine drift time for carrier across depletion region for photodiode having intrinsic region width of 30μm and electron drift velocity of 105 ms-1. Correct Answer 3×10-10 Seconds

The drift time is given by tdrift = w/vd = 30×10-6/1×10-10 = 3×10-10 seconds.

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