An n-type semiconductor is made by doping silicon crystal with _.
Correct answer: C. Arsenic
- A. Indium
- B. Aluminium
- C. Arsenic
- D. Both B and C
Explanation
N- type semiconductor is denoted by positive ion and free electron.Silicon Si has 4 valence electrons and Arsenic As has 5 valence electrons in their respective outermost shells. Si and As doping allows formation of a covalent bond of 4 electrons from both elements while one electron from Si remains free for conduction, forming an N type semiconductor.
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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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