EE 436 Physics of Transistors G. Tuttle

pn-junction current practice problems
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A uniformly doped silicon p-n junction has n-type doping of 6.0e+15 cm-3 and p-type doping of 7.0e+17 cm-3.

The width of the n-type quasi-neutral region is 3 μm, and the width of the p-type quasi-neutral region is 10 μm.

The diode area is 400 μm x 400 μm.

The applied voltage is -10 V.

Calculate the diode current at room temperature:

Note: For silicon,