EC > GATE 2016 SET-2 > Semiconductor Physics
Consider a region of silicon devoid of electrons and holes, with an ionized donor density of Nd+=1017cm-3. The electric field at x=0 is 0 V/cm and the electric field at x=L is 50 kV/cm in the positive x direction. Assume that the electric field is zero in the y and z directions at all points.
Given q=1.6×10-19 coulomb, ε0=8.85×10-14F/cm, εr=11.7 for silicon, the value of L in nm is
Correct : 33.5
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