Question

Problem – A silicon wafer is doped with 2×1016 boron and 1016 phosphorus atoms per cm3

.

Calculate n, p, and EF at room temperature assuming complete ionization. Repeat the same for 8

x 1015 boron atoms per cm3

and 1016 phosphorus atoms per cm3

.

Answer 1

1)

$n_1=2\cdot 10^{16},$ $p_1=5\cdot 10^3,$

$n_2=10^{16},$ $p_2=10^4,$

2)

$n_1=8\cdot10^{15},$ $p_1=1.25\cdot 10^4,$

$n_2=10^{16},$ $p_2=10^4.$