Addition of trivalent impurity to a semiconductor creates many_______________?
Correct answer: A. Holes
- A. Holes
- B. Free electrons
- C. Valence electrons
- D. Bound electrons
Explanation
A trivalent impurity has only three valence electrons, so it leaves one incomplete covalent bond when added to silicon or germanium. This vacancy behaves as a hole and produces p-type material.
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