Semi-conductors with donor atoms and free electrons belong to the type________________?
Correct answer: A. n
- A. n
- B. p
- C. mix
- D. any of above
Explanation
A donor atom contributes an extra electron to the crystal, making free electrons the majority carriers and producing an n-type semiconductor. The likely mistake is choosing p-type because both types are formed by doping, but p-type material uses acceptor impurities and has holes as majority carriers.
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About PN Junction
A PN junction forms when p type and n type semiconductor regions meet, creating a depletion layer and a potential barrier. The topic covers forward and reverse bias, diode current voltage characteristics, breakdown and rectification, while distinguishing an ordinary junction diode from a transistor formed from multiple junctions.
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