Semiconducting Devices Question 155

Question: The impurity atom added to germanium to make it N-type semiconductor is

[KCET 1993; KCET (Engg./Med.) 2000]

Options:

A) Arsenic

B) Iridium

C) Aluminium

D) Iodine

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Answer:

Correct Answer: A

Solution:

For N-type semiconductor, the impurity should be pentavalent.



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