Semiconducting Devices Question 123

Question: The valence of an impurity added to germanium crystal in order to convert it into a P-type semi conductor is

[MP PMT 1989; CPMT 1987]

Options:

A) 6

B) 5

C) 4

D) 3

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Answer:

Correct Answer: D

Solution:

$ Ge $ + $ \begin{aligned} & \text{Trivalent} \ & \text{ impurity} \ \end{aligned}$

$ \begin{aligned} & P\text{-type} \ & \text{semiconductor} \ \end{aligned}$



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