Flashcards on Semiconductor diode
Semiconductor Diode: Understanding Basics & Applications
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Semiconductor Diodes
19 cards
Card 1
Question: What is the primary function of a semiconductor diode?
Answer: A semiconductor diode allows electric current to flow predominantly in one direction while blocking it in the opposite direction.
Card 2
Question: What is the core component of every semiconductor diode?
Answer: The PN junction.
Card 3
Question: How is a PN junction formed?
Answer: A PN junction is formed when a P-type semiconductor material is brought into intimate contact with an N-type semiconductor material.
Card 4
Question: What process is used to create P-type and N-type semiconductor materials?
Answer: Doping.
Card 5
Question: What are P-type semiconductors doped with?
Answer: Trivalent impurities (e.g., boron, gallium).
Card 6
Question: What are the majority carriers in P-type semiconductor material?
Answer: Holes.
Card 7
Question: What are N-type semiconductors doped with?
Answer: Pentavalent impurities (e.g., phosphorus, arsenic).
Card 8
Question: What are the majority carriers in N-type semiconductor material?
Answer: Electrons.
Card 9
Question: What happens when free electrons from the N-side diffuse into the P-side at a PN junction?
Answer: They leave behind positively charged donor ions in the N-type material.
Card 10
Question: What happens when holes from the P-side diffuse into the N-side at a PN junction?
Answer: They leave behind negatively charged acceptor ions in the P-type material.