Question

Which of the following energy band diagram shows the N-type semiconductor?

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

In a $N-$type semiconductor, there is one extra electron left, after completing the octet. This electron has very small ionisation energy and so, it lies very close to the conduction band. So, the donor level lies closely below the bottom of the conduction band

Hence, $\left(B\right)$ is the correct answer.