Semiconductor Doping and Charge Carriers Quiz

What type of impurity is used to increase the number of holes in a semiconductor?

• Pentavalent impurity

• Trivalent impurity

• Hexavalent impurity

• Monovalent impurity

Which of the following is an example of a trivalent atom?

• Arsenic

• Antimony

• Phosphorus

• Aluminum

In a p-type semiconductor, what is the role of an acceptor?

• To donate electrons

• To create free electrons

• To receive electrons

• To increase electron mobility

What happens during recombination in a p-type semiconductor?

• Holes move to the positive terminal

• Electrons fill holes

• Holes are created

• Electrons are emitted

In a p-type semiconductor, what is the majority charge carrier?

• Electrons

• Holes

• Protons

• Neutrons

What is the minority charge carrier in a p-type semiconductor?

• Electrons

• Neutrons

• Protons

• Holes

When a voltage is applied, in which direction do holes move in a p-type semiconductor?

• They do not move

• Towards the positive terminal

• Towards the negative terminal

• Randomly

What is the effect of minority carriers on the current in a p-type semiconductor?

• They slightly decrease the current

• They have no effect

• They significantly increase the current

• They contribute very little to the current

In an n-type semiconductor, what is the majority charge carrier?

• Neutrons

• Holes

• Protons

• Electrons

What is the role of the doping material in an n-type semiconductor?

• Insulator

• Acceptor

• Donor

• Neutralizer