A) \[p-\]type
B) \[n-\]type
C) \[n-p-n\]type
D) \[p-n-p\]type
Correct Answer: B
Solution :
When an impurity atom with S valence electrons is introduced in a germanium crystal, four of the five valence electrons of impurity atom form covalent bonds with one each valance electron of four germanium atoms and fifth valence electron becomes free to move in the crystal. This acts as charge carrier. Such impurity atoms is called donor atoms because they provide conduction electrons to the crystal. Hence, it is an \[n-\]type semiconductor.You need to login to perform this action.
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