18 Questions
What is the term used to describe the total current density due to drift and diffusion of electrons?
Je = e(nμeE + De)
What happens when N-type and P-type semiconductor materials are joined together?
They create a potential barrier zone
What is the name of the zone around the PN Junction that is depleted of free carriers?
Depletion region
What happens to the free charge carriers when a potential barrier is created around the PN Junction?
They are repelled from the junction
What do donor atoms do in a PN Junction?
Attract electrons
How do N-type and P-type semiconductor materials behave when fused together?
They produce a Depletion Layer
What happens to the electric field in a P-N junction under forward biasing?
An electric field is produced from P to N
How does the barrier energy change in a P-N junction under forward biasing?
The barrier energy decreases
What effect does forward bias have on the flow of majority charge carriers in a P-N junction?
The flow of majority charge carriers increases
Which statement best describes the effect of forward bias on minority charge carriers in a P-N junction?
Forward bias has no effect on minority charge carriers
What happens to the current in a P-N junction under forward bias?
A strong current flows
How does the width of the depletion layer change under forward biasing in a P-N junction?
The width of the depletion layer decreases
In a PN junction under reverse bias, what happens to the number of majority charge carriers crossing the junction?
Becomes nearly zero
What effect does an increase in temperature have on the reverse saturated current in a PN junction?
Increases the current
What is the energy band structure of a PN junction under forward biasing?
Barrier energy increases, depletion layer decreases
What is the impact on current when a PN junction is under forward bias?
Majority charge carriers dominate the current flow
What type of junction is an extension of metal-semiconductor point contact diode?
Schottky diode
What is another name for a hot electron diode?
Schottky diode
This quiz covers topics related to total current density due to drift and diffusion of electrons and holes in semiconductors, as well as concepts related to p-n junctions including depletion region and potential barrier. Test your knowledge on semiconductor physics!
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