Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 16

16. If a small amount of antimony is added to germanium crystal

(a) it becomes a p-type semiconductor

(b) the antimony becomes an acceptor atom

(c) there will be more free electrons than holes in the semiconductor

(d) its resistance is increased

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Answer:

Correct Answer: 16. (c)

Solution:

  1. (c) When small amount of antimony (pentavalent) is added to germanium crystal then crystal becomes n-type semi conductor. Therefore, there will be more free electrons than holes in the semiconductor.