Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 48
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49. Which of the following, when added as an impurity, into the silicon, produces $n$-type semiconductor?
======= ####49. Which of the following, when added as an impurity, into the silicon, produces $n$-type semiconductor?
3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed:content/english/neet-pyq-chapterwise/physics/semiconductor-electronics-materials-devices-and-simple-circuits/semiconductor-electronics-materials-devices-and-simple-circuits—result-question-48.md (a) Phosphorous
(b) Aluminium
(c) Magnesium
(d) Both b and c
[1995]
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Answer:
Correct Answer: 49. (a)
Solution:
- (a) Phosphorous $(P)$ is pentavalent and silicon is tetravalent. Therefore, when silicon is doped with pentavalent impurity, it forms a n-type semiconductor.
