What is the barrier potential of a silicon diode at room temperat
| What is the barrier potential of a silicon diode at room temperature?
A. 1.0 V
B. 0.3 V
C. 0.7 V
D. 1.2 V
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
- The barrier potential in a pn junction diode is a barrier that does not allow charge flow across the junction normally.
- It is the forward voltage at which the current through the PN-junction starts to increase rapidly.
- The barrier potential of the "Germanium" diode is 0.3 V and that of a "Silicon" diode is 0.7 V.
The V-I characteristic of both Ge and Si is as shown:
