Question #240269

- Consider a pn junction in equilibrium at room temperature (T = 300 K) for which the doping concentrations are NA = 1018/cm3 and ND = 1016/cm3 and the cross-sectional area A = 10-4 cm2. Calculate pp, np, nn, pn, V0, W, xn, xp and QJ.

Expert's answer

We can use n_{i} = 1.5×1010/cm3 for the calculations:

We obtain the value of V_{0 }by deducing from the equation:

Therefore: V_{0 }=0.814 V

And for X_{n }and_{ }X_{p } we use the equation:

Lastly, charge stored on either sides:

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