Extrinsic Semiconductors If NA 1017 cm3 at 300 K what is th

Extrinsic Semiconductors If N_A = 10^17 cm^-3 at 300 K, what is the electron concentration?

Solution

here we need to know whitch type of transsistor is

ie for si ni=1.5*10^10;

for ge ni=2.34*10^13;

for GaAs ni=1.8*10^6;

based on the ni

electrron concentration n=(ni^2)/Na;

for si n=2.25*10^3;

for ge n=5.47*10^9;