Find the value of built in voltage of the PN diode when \({{\rm{N}}_{\rm{A}}} = {10^{13}}{\rm{\;c}}{{\rm{m}}^{ - 3}}\)
And \({{\rm{N}}_{\rm{D}}} = 25 \times {10^{11}}{\rm{\;c}}{{\rm{m}}^{ - 3}}\) assume intrinsic concentration is \(5 \times {10^{12}}{\rm{c}}{{\rm{m}}^{ - 3}}\)1
1 V
2
4 V
3
0 V
4
2.5 V