Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 47
48. When arsenic is added as an impurity to silicon, the resulting material is
[1996]
(a) n-type semiconductor
(b) p-type semiconductor
(c) n-type conductor
(d) insulator
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Answer:
Correct Answer: 48. (a)
Solution:
- (a) Arsenic contains 5 electrons in its outermost shell. When Arsenic is mixed with silicon there is one electron extra in silicon crystal. Hence, such type of semi conductor is $n$-type semi conductor.
