Electronic Devices

Q.

The concentration of minority carriers in an extrinsic semiconductor under equilibrium is

A. Directly proportional to the doping concentration
B. Inversely proportional to the doping concentration
C. Directly proportional to the intrinsic concentration
D. Inversely proportional to the intrinsic concentration

Answer : Option B

Explanation :

For n-type p is minority carrier concentration
np = n2
np = constant Since ni is constant
p ∝ (1/n)
Thus p is inversely proportional to n.