COMEDK2024PhysicsSemiconductors
In forward biasing of a p-n junction,
Options
- Aelectrons move from lower to higher energy level
- Belectrons move from higher to lower energy level
- Choles in valence band move from higher energy level to lower energy level
- DNone of the above
Correct answer
B. electrons move from higher to lower energy level
Step-by-step solution
When a p-n junction is connected in forward bias, an electric field exists which causes electrons to move from n to p -side (forward current). As electrons are in conduction band and holes are in valence band, thus electrons move from higher to lower energy levels.