When a pentavalent impurity is added to a pure semiconductor, it becomes________________?
Correct answer: D. n-type semiconductor
- A. An insulator
- B. An intrinsic semiconductor
- C. p-type semiconductor
- D. n-type semiconductor
Explanation
A pentavalent impurity contributes an extra loosely bound electron to the crystal, making electrons the majority carriers. Such doped material is therefore called n-type semiconductor.
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