What is the importance of energy gap in a semiconductor?
Answers
It is the energy required to promote a valence electron bound to an atom to become a conduction electron, which is free to move within the crystal lattice and serve as a charge carrier to conduct electric current.
Brainliest plz
The importance of energy gap in a semiconductor is :
•There are no free electrons present in the semiconductor materials which can easily conduct electricity just like any metal.
• Instead of the free electrons there are two bands in these semiconductors :
- valence band.
- conduction band.
• And there is a gap in between the two bands mentioned above which is known as the energy gap.
• When an electron of the semiconductor gets enough energy to cross this energy gap to reach in the conduction band,the semiconductor can conduct electricity.
• That's why if there is no energy gap in these semiconductor materials, these materials will become insulators.