Majority Carriers P-type
Easyphysics
Majority carriers in p-type semiconductor are?
Select the correct option:
Solution
Incorrect! Answer:
Holes
- p-type Doping: Created by adding trivalent impurities (like Boron, Indium, or Aluminum) to a semiconductor.
- Hole Creation: The impurity atom has only 3 valence electrons, creating a vacancy or 'hole' in one of the bonds with Si atoms.
- Acceptor Level: These impurities are called acceptors because they can accept an electron from the Si lattice to fill the vacancy.
- Concentration: This significantly increases the concentration of holes (nh≫ne), making them the majority charge carriers.
- Note: Although holes contribute to conduction, protons are fixed in the nuclei and do not move through the lattice.
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About This Question
- Subject
- physics
- Chapter
- semiconductor devices
- Topic
- majority carriers p-type
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Holes
- p-type Doping: Created by adding trivalent impurities (like Boron, Indium, or Aluminum) to a semiconductor.
- Hole Creation: The impurity atom has only 3 valence electrons, creating a vacancy or 'hole' in one of the bonds with Si atoms.
- Acceptor Level: These impurities are called acceptors because they can accept an electron from the Si lattice to fill the vacancy.
- Concentration: This significantly increases the concentration of holes (nh≫ne), making them the majority charge carriers.
- Note: Although holes contribute to conduction, protons are fixed in the nuclei and do not move through the lattice.
This easy difficulty physics question is from the chapter semiconductor devices, covering the topic of majority carriers p-type. It appeared in the 2025 exam.
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