Electronic Devices and Circuits - Engineering

Q1:

In an n type semiconductor the fermi level is 0.35 eV below the conduction band, the concentration of donor atoms is increased to three times. The new position of Fermi level will be

A 0.35 eV below conduction band

B about 0.32 eV below conduction band

C about 0.32 eV above conduction band

D about 0.1 eV below conduction band

ANS:B - about 0.32 eV below conduction band

Therefore, conductivity increases.