Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
Which of the statements given in Exercise 14.1 is true for p-type semiconductors.
A
raises the potential barrier.
B
reduces the majority carrier current to zero.
C
lowers the potential barrier.
D
None of the above.
Answer
lowers the potential barrier.
Explanation
Solution
The correct statement is (C): Lowers the potential barrier
When a forward bias is applied to a p-n junction, it lowers the value of potential barrier. In the case of a forward bias, the potential barrier opposes the applied voltage. Hence, the potential barrier across the junction gets reduced.