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Mechanism of Carrier Conduction

The drift cur...

Question

The drift current in a p-n junction is $20.0 μ A .$ Estimate the number of electrons crossing a cross section per second in the depletion region.

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Solution

Given Drift Current = $20 μ A$

$= 20 \times 10^{- 6} A .$

Both holes and electrons are moving

So, number of electrons

$= \frac{20 \times 10^{- 8}}{2 \times 1.6 \times 10^{- 19}} = 6.25 \times 10^{13}$

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