Question

In a P-N junction, a potential barrier exists across the function. A hole with kinetic energy of 300 meV *approaches the junction Find the kinetic energy of the hole it crosses the junction it the hole approached the Junction from the p-side and

• A. 105 me V
• B. 55 me V
• C. 50 me V
• D. 100 me V

Answer 1

Answer: (C)

50 me V

Potential barrier 'd'$=250$mev

Initial KE of hole$=300$mev

KE of the hole decreases when the junction in forward biased and increases when reverse biases in given Px dioide.

(a) Final KE$=(300-250)$ mev$=50$ mev

(b) Initial KE$=(300+250)$ mev$=550$ mev.