Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Solid State

Question:

Which kind of semiconductor you will get when Silicon is doped with group 13 elements like Boron or Aluminium?

Options:

n type semiconductors

p type semiconductors

Both type

None of the above

Correct Answer:

p type semiconductors

Explanation:

Silicon or germanium can also be doped with a group 13 element like B, Al or Ga which contains only three valence electrons. The place where the fourth valence electron is missing is called electron hole or electron vacancy. These kind of semiconductors are called p-type.