Question

Which statement is correct for P-type semiconductor-

• A. The number of electrons in conduction band is more than number of holes in valence bond at room temperature
• B. The number of holes in valence band is more than number of electrons in conduction bond at room temperature.
• C. There are no holes and electrons at room temperature
• D. number of holes and electron is equal in valence and conduction band

Answer 1

Answer: (B)

The number of holes in valence band is more than number of electrons in conduction bond at room temperature.

In the $\text{P -}$type semiconductors, the major carriers are the holes. In room temperature, the number of holes in the valence band is more than the number of electrons in the conduction band.