Question 6
- What is a p-n junction?
- Differentiate between the production of a p-type semiconductor and the production of n-type semiconductor
Observation
Few candidatesattempted this question and got the correct response. Performance was below average.
The expected response
- A p-n junction
- Differentiating between the production of p-type semiconductor and n-type semiconductor
Boundary/interface between a p-type and an n-type semiconductors joined together.
P-type semiconductor is produced by doping a pure semiconductor with trivalent atoms while n-type semiconductor is produced by doping a pure semiconductor with pentavalent atom.