Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 42
43. Which of the following when added acts as an impurity into silicon produced n-type semiconductor?
[1999]
(a) $P$
(b) $Al$
(c) $B$
(d) $Mg$
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Answer:
Correct Answer: 43. (a)
Solution:
- (a) n-type of silicon semiconductor is formed when impurity is mixed with pentavalent atom. Out of given choices only phosphorus is pentavalent.
